blob: acaf6b249e2635a9be8ff6072abe1c8032266487 [file] [log] [blame]
// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// libGLESv2.cpp: Implements the exported OpenGL ES 2.0 functions.
#include "main.h"
#include "mathutil.h"
#include "utilities.h"
#include "Buffer.h"
#include "Context.h"
#include "Fence.h"
#include "Framebuffer.h"
#include "Program.h"
#include "Renderbuffer.h"
#include "Shader.h"
#include "Texture.h"
#include "Query.h"
#include "TransformFeedback.h"
#include "VertexArray.h"
#include "common/debug.h"
#include "Common/Version.h"
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <GLES3/gl3.h>
#include <algorithm>
#include <limits>
namespace es2
{
static bool validImageSize(GLint level, GLsizei width, GLsizei height)
{
if(level < 0 || level >= IMPLEMENTATION_MAX_TEXTURE_LEVELS || width < 0 || height < 0)
{
return false;
}
return true;
}
}
namespace gl
{
using namespace es2;
void GL_APIENTRY ActiveTexture(GLenum texture)
{
TRACE("(GLenum texture = 0x%X)", texture);
auto context = es2::getContext();
if(context)
{
if(texture < GL_TEXTURE0 || texture > GL_TEXTURE0 + es2::MAX_COMBINED_TEXTURE_IMAGE_UNITS - 1)
{
return error(GL_INVALID_ENUM);
}
context->setActiveSampler(texture - GL_TEXTURE0);
}
}
void GL_APIENTRY AttachShader(GLuint program, GLuint shader)
{
TRACE("(GLuint program = %d, GLuint shader = %d)", program, shader);
auto context = es2::getContext();
if(context)
{
es2::Program *programObject = context->getProgram(program);
es2::Shader *shaderObject = context->getShader(shader);
if(!programObject)
{
if(context->getShader(program))
{
return error(GL_INVALID_OPERATION);
}
else
{
return error(GL_INVALID_VALUE);
}
}
if(!shaderObject)
{
if(context->getProgram(shader))
{
return error(GL_INVALID_OPERATION);
}
else
{
return error(GL_INVALID_VALUE);
}
}
if(!programObject->attachShader(shaderObject))
{
return error(GL_INVALID_OPERATION);
}
}
}
void GL_APIENTRY BeginQueryEXT(GLenum target, GLuint name)
{
TRACE("(GLenum target = 0x%X, GLuint name = %d)", target, name);
switch(target)
{
case GL_ANY_SAMPLES_PASSED_EXT:
case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT:
break;
default:
return error(GL_INVALID_ENUM);
}
if(name == 0)
{
return error(GL_INVALID_OPERATION);
}
auto context = es2::getContext();
if(context)
{
context->beginQuery(target, name);
}
}
void GL_APIENTRY BindAttribLocation(GLuint program, GLuint index, const GLchar* name)
{
TRACE("(GLuint program = %d, GLuint index = %d, const GLchar* name = %s)", program, index, name);
if(index >= es2::MAX_VERTEX_ATTRIBS)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
es2::Program *programObject = context->getProgram(program);
if(!programObject)
{
if(context->getShader(program))
{
return error(GL_INVALID_OPERATION);
}
else
{
return error(GL_INVALID_VALUE);
}
}
if(strncmp(name, "gl_", 3) == 0)
{
return error(GL_INVALID_OPERATION);
}
programObject->bindAttributeLocation(index, name);
}
}
void GL_APIENTRY BindBuffer(GLenum target, GLuint buffer)
{
TRACE("(GLenum target = 0x%X, GLuint buffer = %d)", target, buffer);
auto context = es2::getContext();
if(context)
{
switch(target)
{
case GL_ARRAY_BUFFER:
context->bindArrayBuffer(buffer);
return;
case GL_ELEMENT_ARRAY_BUFFER:
context->bindElementArrayBuffer(buffer);
return;
case GL_COPY_READ_BUFFER:
context->bindCopyReadBuffer(buffer);
return;
case GL_COPY_WRITE_BUFFER:
context->bindCopyWriteBuffer(buffer);
return;
case GL_PIXEL_PACK_BUFFER:
context->bindPixelPackBuffer(buffer);
return;
case GL_PIXEL_UNPACK_BUFFER:
context->bindPixelUnpackBuffer(buffer);
return;
case GL_TRANSFORM_FEEDBACK_BUFFER:
context->bindTransformFeedbackBuffer(buffer);
return;
case GL_UNIFORM_BUFFER:
context->bindGenericUniformBuffer(buffer);
return;
default:
return error(GL_INVALID_ENUM);
}
}
}
void GL_APIENTRY BindFramebuffer(GLenum target, GLuint framebuffer)
{
TRACE("(GLenum target = 0x%X, GLuint framebuffer = %d)", target, framebuffer);
if(target != GL_FRAMEBUFFER && target != GL_DRAW_FRAMEBUFFER && target != GL_READ_FRAMEBUFFER)
{
return error(GL_INVALID_ENUM);
}
auto context = es2::getContext();
if(context)
{
if(target == GL_READ_FRAMEBUFFER || target == GL_FRAMEBUFFER)
{
context->bindReadFramebuffer(framebuffer);
}
if(target == GL_DRAW_FRAMEBUFFER || target == GL_FRAMEBUFFER)
{
context->bindDrawFramebuffer(framebuffer);
}
}
}
void GL_APIENTRY BindRenderbuffer(GLenum target, GLuint renderbuffer)
{
TRACE("(GLenum target = 0x%X, GLuint renderbuffer = %d)", target, renderbuffer);
if(target != GL_RENDERBUFFER)
{
return error(GL_INVALID_ENUM);
}
auto context = es2::getContext();
if(context)
{
// [OpenGL ES 2.0.25] Section 4.4.3 page 110
// [OpenGL ES 3.0.4] Section 4.4.2 page 204
// If renderbuffer is not zero, then the resulting renderbuffer object
// is a new state vector, initialized with a zero-sized memory buffer.
context->bindRenderbuffer(renderbuffer);
}
}
void GL_APIENTRY BindTexture(GLenum target, GLuint texture)
{
TRACE("(GLenum target = 0x%X, GLuint texture = %d)", target, texture);
auto context = es2::getContext();
if(context)
{
es2::Texture *textureObject = context->getTexture(texture);
if(textureObject && textureObject->getTarget() != target && texture != 0)
{
return error(GL_INVALID_OPERATION);
}
switch(target)
{
case GL_TEXTURE_2D:
context->bindTexture(TEXTURE_2D, texture);
break;
case GL_TEXTURE_CUBE_MAP:
context->bindTexture(TEXTURE_CUBE, texture);
break;
case GL_TEXTURE_EXTERNAL_OES:
context->bindTexture(TEXTURE_EXTERNAL, texture);
break;
case GL_TEXTURE_2D_ARRAY:
context->bindTexture(TEXTURE_2D_ARRAY, texture);
break;
case GL_TEXTURE_3D:
context->bindTexture(TEXTURE_3D, texture);
break;
case GL_TEXTURE_RECTANGLE_ARB:
context->bindTexture(TEXTURE_2D_RECT, texture);
break;
default:
return error(GL_INVALID_ENUM);
}
}
}
void GL_APIENTRY BlendColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha)
{
TRACE("(GLclampf red = %f, GLclampf green = %f, GLclampf blue = %f, GLclampf alpha = %f)",
red, green, blue, alpha);
auto context = es2::getContext();
if(context)
{
context->setBlendColor(es2::clamp01(red), es2::clamp01(green), es2::clamp01(blue), es2::clamp01(alpha));
}
}
void GL_APIENTRY BlendEquationSeparate(GLenum modeRGB, GLenum modeAlpha)
{
TRACE("(GLenum modeRGB = 0x%X, GLenum modeAlpha = 0x%X)", modeRGB, modeAlpha);
switch(modeRGB)
{
case GL_FUNC_ADD:
case GL_FUNC_SUBTRACT:
case GL_FUNC_REVERSE_SUBTRACT:
case GL_MIN_EXT:
case GL_MAX_EXT:
break;
default:
return error(GL_INVALID_ENUM);
}
switch(modeAlpha)
{
case GL_FUNC_ADD:
case GL_FUNC_SUBTRACT:
case GL_FUNC_REVERSE_SUBTRACT:
case GL_MIN_EXT:
case GL_MAX_EXT:
break;
default:
return error(GL_INVALID_ENUM);
}
auto context = es2::getContext();
if(context)
{
context->setBlendEquation(modeRGB, modeAlpha);
}
}
void GL_APIENTRY BlendEquation(GLenum mode)
{
BlendEquationSeparate(mode, mode);
}
void GL_APIENTRY BlendFuncSeparate(GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha)
{
TRACE("(GLenum srcRGB = 0x%X, GLenum dstRGB = 0x%X, GLenum srcAlpha = 0x%X, GLenum dstAlpha = 0x%X)",
srcRGB, dstRGB, srcAlpha, dstAlpha);
switch(srcRGB)
{
case GL_ZERO:
case GL_ONE:
case GL_SRC_COLOR:
case GL_ONE_MINUS_SRC_COLOR:
case GL_DST_COLOR:
case GL_ONE_MINUS_DST_COLOR:
case GL_SRC_ALPHA:
case GL_ONE_MINUS_SRC_ALPHA:
case GL_DST_ALPHA:
case GL_ONE_MINUS_DST_ALPHA:
case GL_CONSTANT_COLOR:
case GL_ONE_MINUS_CONSTANT_COLOR:
case GL_CONSTANT_ALPHA:
case GL_ONE_MINUS_CONSTANT_ALPHA:
case GL_SRC_ALPHA_SATURATE:
break;
default:
return error(GL_INVALID_ENUM);
}
switch(dstRGB)
{
case GL_ZERO:
case GL_ONE:
case GL_SRC_COLOR:
case GL_ONE_MINUS_SRC_COLOR:
case GL_DST_COLOR:
case GL_ONE_MINUS_DST_COLOR:
case GL_SRC_ALPHA:
case GL_ONE_MINUS_SRC_ALPHA:
case GL_DST_ALPHA:
case GL_ONE_MINUS_DST_ALPHA:
case GL_CONSTANT_COLOR:
case GL_ONE_MINUS_CONSTANT_COLOR:
case GL_CONSTANT_ALPHA:
case GL_ONE_MINUS_CONSTANT_ALPHA:
break;
case GL_SRC_ALPHA_SATURATE:
break;
default:
return error(GL_INVALID_ENUM);
}
switch(srcAlpha)
{
case GL_ZERO:
case GL_ONE:
case GL_SRC_COLOR:
case GL_ONE_MINUS_SRC_COLOR:
case GL_DST_COLOR:
case GL_ONE_MINUS_DST_COLOR:
case GL_SRC_ALPHA:
case GL_ONE_MINUS_SRC_ALPHA:
case GL_DST_ALPHA:
case GL_ONE_MINUS_DST_ALPHA:
case GL_CONSTANT_COLOR:
case GL_ONE_MINUS_CONSTANT_COLOR:
case GL_CONSTANT_ALPHA:
case GL_ONE_MINUS_CONSTANT_ALPHA:
case GL_SRC_ALPHA_SATURATE:
break;
default:
return error(GL_INVALID_ENUM);
}
switch(dstAlpha)
{
case GL_ZERO:
case GL_ONE:
case GL_SRC_COLOR:
case GL_ONE_MINUS_SRC_COLOR:
case GL_DST_COLOR:
case GL_ONE_MINUS_DST_COLOR:
case GL_SRC_ALPHA:
case GL_ONE_MINUS_SRC_ALPHA:
case GL_DST_ALPHA:
case GL_ONE_MINUS_DST_ALPHA:
case GL_CONSTANT_COLOR:
case GL_ONE_MINUS_CONSTANT_COLOR:
case GL_CONSTANT_ALPHA:
case GL_ONE_MINUS_CONSTANT_ALPHA:
break;
case GL_SRC_ALPHA_SATURATE:
break;
default:
return error(GL_INVALID_ENUM);
}
auto context = es2::getContext();
if(context)
{
context->setBlendFactors(srcRGB, dstRGB, srcAlpha, dstAlpha);
}
}
void GL_APIENTRY BlendFunc(GLenum sfactor, GLenum dfactor)
{
BlendFuncSeparate(sfactor, dfactor, sfactor, dfactor);
}
void GL_APIENTRY BufferData(GLenum target, GLsizeiptr size, const GLvoid* data, GLenum usage)
{
size = static_cast<GLint>(size); // Work around issues with some 64-bit applications
TRACE("(GLenum target = 0x%X, GLsizeiptr size = %d, const GLvoid* data = %p, GLenum usage = %d)",
target, size, data, usage);
if(size < 0)
{
return error(GL_INVALID_VALUE);
}
switch(usage)
{
case GL_STREAM_DRAW:
case GL_STATIC_DRAW:
case GL_DYNAMIC_DRAW:
break;
case GL_STREAM_READ:
case GL_STREAM_COPY:
case GL_STATIC_READ:
case GL_STATIC_COPY:
case GL_DYNAMIC_READ:
case GL_DYNAMIC_COPY:
break;
default:
return error(GL_INVALID_ENUM);
}
auto context = es2::getContext();
if(context)
{
es2::Buffer *buffer = nullptr;
if(!context->getBuffer(target, &buffer))
{
return error(GL_INVALID_ENUM);
}
if(!buffer)
{
// A null buffer means that "0" is bound to the requested buffer target
return error(GL_INVALID_OPERATION);
}
buffer->bufferData(data, size, usage);
}
}
void GL_APIENTRY BufferSubData(GLenum target, GLintptr offset, GLsizeiptr size, const GLvoid* data)
{
size = static_cast<GLint>(size); // Work around issues with some 64-bit applications
offset = static_cast<GLint>(offset);
TRACE("(GLenum target = 0x%X, GLintptr offset = %d, GLsizeiptr size = %d, const GLvoid* data = %p)",
target, offset, size, data);
if(size < 0 || offset < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
es2::Buffer *buffer = nullptr;
if(!context->getBuffer(target, &buffer))
{
return error(GL_INVALID_ENUM);
}
if(!buffer)
{
// A null buffer means that "0" is bound to the requested buffer target
return error(GL_INVALID_OPERATION);
}
if(buffer->isMapped())
{
// It is an invalid operation to update an already mapped buffer
return error(GL_INVALID_OPERATION);
}
if((size_t)size + offset > buffer->size())
{
return error(GL_INVALID_VALUE);
}
buffer->bufferSubData(data, size, offset);
}
}
GLenum GL_APIENTRY CheckFramebufferStatus(GLenum target)
{
TRACE("(GLenum target = 0x%X)", target);
if(target != GL_FRAMEBUFFER && target != GL_DRAW_FRAMEBUFFER && target != GL_READ_FRAMEBUFFER)
{
return error(GL_INVALID_ENUM, 0);
}
auto context = es2::getContext();
if(context)
{
es2::Framebuffer *framebuffer = nullptr;
if(target == GL_READ_FRAMEBUFFER)
{
framebuffer = context->getReadFramebuffer();
}
else
{
framebuffer = context->getDrawFramebuffer();
}
if(!framebuffer)
{
return GL_FRAMEBUFFER_UNDEFINED_OES;
}
return framebuffer->completeness();
}
return 0;
}
void GL_APIENTRY Clear(GLbitfield mask)
{
TRACE("(GLbitfield mask = %X)", mask);
if((mask & ~(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT)) != 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
context->clear(mask);
}
}
void GL_APIENTRY ClearColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha)
{
TRACE("(GLclampf red = %f, GLclampf green = %f, GLclampf blue = %f, GLclampf alpha = %f)",
red, green, blue, alpha);
auto context = es2::getContext();
if(context)
{
context->setClearColor(red, green, blue, alpha);
}
}
void GL_APIENTRY ClearDepthf(GLclampf depth)
{
TRACE("(GLclampf depth = %f)", depth);
auto context = es2::getContext();
if(context)
{
context->setClearDepth(depth);
}
}
void GL_APIENTRY ClearStencil(GLint s)
{
TRACE("(GLint s = %d)", s);
auto context = es2::getContext();
if(context)
{
context->setClearStencil(s);
}
}
void GL_APIENTRY ColorMask(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha)
{
TRACE("(GLboolean red = %d, GLboolean green = %d, GLboolean blue = %d, GLboolean alpha = %d)",
red, green, blue, alpha);
auto context = es2::getContext();
if(context)
{
context->setColorMask(red != GL_FALSE, green != GL_FALSE, blue != GL_FALSE, alpha != GL_FALSE);
}
}
void GL_APIENTRY CompileShader(GLuint shader)
{
TRACE("(GLuint shader = %d)", shader);
auto context = es2::getContext();
if(context)
{
es2::Shader *shaderObject = context->getShader(shader);
if(!shaderObject)
{
if(context->getProgram(shader))
{
return error(GL_INVALID_OPERATION);
}
else
{
return error(GL_INVALID_VALUE);
}
}
shaderObject->compile();
}
}
void GL_APIENTRY CompressedTexImage2D(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height,
GLint border, GLsizei imageSize, const GLvoid* data)
{
TRACE("(GLenum target = 0x%X, GLint level = %d, GLenum internalformat = 0x%X, GLsizei width = %d, "
"GLsizei height = %d, GLint border = %d, GLsizei imageSize = %d, const GLvoid* data = %p)",
target, level, internalformat, width, height, border, imageSize, data);
if(!validImageSize(level, width, height) || border != 0 || imageSize < 0)
{
return error(GL_INVALID_VALUE);
}
if(!IsCompressed(internalformat))
{
return error(GL_INVALID_ENUM);
}
if(border != 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
if(level >= es2::IMPLEMENTATION_MAX_TEXTURE_LEVELS)
{
return error(GL_INVALID_VALUE);
}
switch(target)
{
case GL_TEXTURE_2D:
if(width > (es2::IMPLEMENTATION_MAX_TEXTURE_SIZE >> level) ||
height > (es2::IMPLEMENTATION_MAX_TEXTURE_SIZE >> level))
{
return error(GL_INVALID_VALUE);
}
break;
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
if(width != height)
{
return error(GL_INVALID_VALUE);
}
if(width > (es2::IMPLEMENTATION_MAX_CUBE_MAP_TEXTURE_SIZE >> level) ||
height > (es2::IMPLEMENTATION_MAX_CUBE_MAP_TEXTURE_SIZE >> level))
{
return error(GL_INVALID_VALUE);
}
break;
case GL_TEXTURE_RECTANGLE_ARB: // Rectangle textures cannot be compressed
default:
return error(GL_INVALID_ENUM);
}
if(imageSize != gl::ComputeCompressedSize(width, height, internalformat))
{
return error(GL_INVALID_VALUE);
}
GLenum validationError = context->getPixels(&data, GL_UNSIGNED_BYTE, imageSize);
if(validationError != GL_NO_ERROR)
{
return error(validationError);
}
if(target == GL_TEXTURE_2D || target == GL_TEXTURE_RECTANGLE_ARB)
{
es2::Texture2D *texture = context->getTexture2D(target);
if(!texture)
{
return error(GL_INVALID_OPERATION);
}
texture->setCompressedImage(level, internalformat, width, height, imageSize, data);
}
else if(es2::IsCubemapTextureTarget(target))
{
es2::TextureCubeMap *texture = context->getTextureCubeMap();
if(!texture)
{
return error(GL_INVALID_OPERATION);
}
texture->setCompressedImage(target, level, internalformat, width, height, imageSize, data);
}
else UNREACHABLE(target);
}
}
void GL_APIENTRY CompressedTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
GLenum format, GLsizei imageSize, const GLvoid* data)
{
TRACE("(GLenum target = 0x%X, GLint level = %d, GLint xoffset = %d, GLint yoffset = %d, "
"GLsizei width = %d, GLsizei height = %d, GLenum format = 0x%X, "
"GLsizei imageSize = %d, const GLvoid* data = %p)",
target, level, xoffset, yoffset, width, height, format, imageSize, data);
if(!es2::IsTexImageTarget(target))
{
return error(GL_INVALID_ENUM);
}
if(level < 0 || level >= es2::IMPLEMENTATION_MAX_TEXTURE_LEVELS)
{
return error(GL_INVALID_VALUE);
}
if(xoffset < 0 || yoffset < 0 || !validImageSize(level, width, height) || imageSize < 0)
{
return error(GL_INVALID_VALUE);
}
if(!IsCompressed(format))
{
return error(GL_INVALID_ENUM);
}
if(imageSize != gl::ComputeCompressedSize(width, height, format))
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
if(xoffset % 4 != 0 || yoffset % 4 != 0)
{
// We wait to check the offsets until this point, because the multiple-of-four restriction does not exist unless DXT1 textures are supported
return error(GL_INVALID_OPERATION);
}
GLenum validationError = context->getPixels(&data, GL_UNSIGNED_BYTE, imageSize);
if(validationError != GL_NO_ERROR)
{
return error(validationError);
}
if(target == GL_TEXTURE_2D || target == GL_TEXTURE_RECTANGLE_ARB)
{
es2::Texture2D *texture = context->getTexture2D(target);
GLenum validationError = ValidateSubImageParams(true, false, target, level, xoffset, yoffset, width, height, format, GL_NONE, texture);
if(validationError != GL_NO_ERROR)
{
return error(validationError);
}
texture->subImageCompressed(level, xoffset, yoffset, width, height, format, imageSize, data);
}
else if(es2::IsCubemapTextureTarget(target))
{
es2::TextureCubeMap *texture = context->getTextureCubeMap();
GLenum validationError = ValidateSubImageParams(true, false, target, level, xoffset, yoffset, width, height, format, GL_NONE, texture);
if(validationError != GL_NO_ERROR)
{
return error(validationError);
}
texture->subImageCompressed(target, level, xoffset, yoffset, width, height, format, imageSize, data);
}
else UNREACHABLE(target);
}
}
void GL_APIENTRY CopyTexImage2D(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border)
{
TRACE("(GLenum target = 0x%X, GLint level = %d, GLenum internalformat = 0x%X, "
"GLint x = %d, GLint y = %d, GLsizei width = %d, GLsizei height = %d, GLint border = %d)",
target, level, internalformat, x, y, width, height, border);
if(!validImageSize(level, width, height))
{
return error(GL_INVALID_VALUE);
}
if(border != 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
switch(target)
{
case GL_TEXTURE_RECTANGLE_ARB:
if(level != 0)
{
return error(GL_INVALID_VALUE);
}
// Fall through to GL_TEXTURE_2D case.
case GL_TEXTURE_2D:
if(width > (es2::IMPLEMENTATION_MAX_TEXTURE_SIZE >> level) ||
height > (es2::IMPLEMENTATION_MAX_TEXTURE_SIZE >> level))
{
return error(GL_INVALID_VALUE);
}
break;
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
if(width != height)
{
return error(GL_INVALID_VALUE);
}
if(width > (es2::IMPLEMENTATION_MAX_CUBE_MAP_TEXTURE_SIZE >> level) ||
height > (es2::IMPLEMENTATION_MAX_CUBE_MAP_TEXTURE_SIZE >> level))
{
return error(GL_INVALID_VALUE);
}
break;
default:
return error(GL_INVALID_ENUM);
}
es2::Framebuffer *framebuffer = context->getReadFramebuffer();
if(!framebuffer || (framebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE))
{
return error(GL_INVALID_FRAMEBUFFER_OPERATION);
}
es2::Renderbuffer *source = framebuffer->getReadColorbuffer();
if(context->getReadFramebufferName() != 0 && (!source || source->getSamples() > 1))
{
return error(GL_INVALID_OPERATION);
}
GLenum colorbufferFormat = source->getFormat();
// Determine the sized internal format.
if(gl::IsUnsizedInternalFormat(internalformat))
{
if(colorbufferFormat == GL_RGB10_A2)
{
// Not supported with unsized internalformat.
// https://www.khronos.org/members/login/bugzilla/show_bug.cgi?id=9807#c56
return error(GL_INVALID_OPERATION);
}
if(gl::GetBaseInternalFormat(colorbufferFormat) == internalformat)
{
internalformat = colorbufferFormat;
}
else if(GetColorComponentType(colorbufferFormat) == GL_UNSIGNED_NORMALIZED && GetRedSize(colorbufferFormat) <= 8)
{
// TODO: Convert to the smallest format that fits all components.
// e.g. Copying RGBA4 to RGB should result in RGB565, not RGB8.
internalformat = gl::GetSizedInternalFormat(internalformat, GL_UNSIGNED_BYTE);
}
else if(GetColorComponentType(colorbufferFormat) == GL_INT)
{
internalformat = gl::GetSizedInternalFormat(internalformat, GL_INT);
}
else if(GetColorComponentType(colorbufferFormat) == GL_UNSIGNED_INT)
{
internalformat = gl::GetSizedInternalFormat(internalformat, GL_UNSIGNED_INT);
}
else if(GetColorComponentType(colorbufferFormat) == GL_FLOAT && GetRedSize(colorbufferFormat) == 16) // GL_EXT_color_buffer_half_float
{
internalformat = gl::GetSizedInternalFormat(internalformat, GL_HALF_FLOAT_OES);
}
else if(GetColorComponentType(colorbufferFormat) == GL_FLOAT && GetRedSize(colorbufferFormat) == 32) // GL_EXT_color_buffer_float
{
internalformat = gl::GetSizedInternalFormat(internalformat, GL_FLOAT);
}
else
{
UNIMPLEMENTED("internalformat = %x, colorbufferFormat = %X", internalformat, colorbufferFormat);
return error(GL_INVALID_OPERATION);
}
}
if(!ValidateCopyFormats(internalformat, colorbufferFormat))
{
return;
}
if(target == GL_TEXTURE_2D || target == GL_TEXTURE_RECTANGLE_ARB)
{
es2::Texture2D *texture = context->getTexture2D(target);
if(!texture)
{
return error(GL_INVALID_OPERATION);
}
texture->copyImage(level, internalformat, x, y, width, height, source);
}
else if(es2::IsCubemapTextureTarget(target))
{
es2::TextureCubeMap *texture = context->getTextureCubeMap();
if(!texture)
{
return error(GL_INVALID_OPERATION);
}
texture->copyImage(target, level, internalformat, x, y, width, height, source);
}
else UNREACHABLE(target);
}
}
void GL_APIENTRY CopyTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height)
{
TRACE("(GLenum target = 0x%X, GLint level = %d, GLint xoffset = %d, GLint yoffset = %d, "
"GLint x = %d, GLint y = %d, GLsizei width = %d, GLsizei height = %d)",
target, level, xoffset, yoffset, x, y, width, height);
if(!es2::IsTexImageTarget(target))
{
return error(GL_INVALID_ENUM);
}
if(level < 0 || level >= es2::IMPLEMENTATION_MAX_TEXTURE_LEVELS)
{
return error(GL_INVALID_VALUE);
}
if(xoffset < 0 || yoffset < 0 || width < 0 || height < 0)
{
return error(GL_INVALID_VALUE);
}
if(std::numeric_limits<GLsizei>::max() - xoffset < width || std::numeric_limits<GLsizei>::max() - yoffset < height)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
es2::Framebuffer *framebuffer = context->getReadFramebuffer();
if(!framebuffer || (framebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE))
{
return error(GL_INVALID_FRAMEBUFFER_OPERATION);
}
es2::Renderbuffer *source = framebuffer->getReadColorbuffer();
if(context->getReadFramebufferName() != 0 && (!source || source->getSamples() > 1))
{
return error(GL_INVALID_OPERATION);
}
es2::Texture *texture = nullptr;
if(target == GL_TEXTURE_2D || target == GL_TEXTURE_RECTANGLE_ARB)
{
texture = context->getTexture2D(target);
}
else if(es2::IsCubemapTextureTarget(target))
{
texture = context->getTextureCubeMap();
}
else UNREACHABLE(target);
GLenum validationError = ValidateSubImageParams(false, true, target, level, xoffset, yoffset, width, height, GL_NONE, GL_NONE, texture);
if(validationError != GL_NO_ERROR)
{
return error(validationError);
}
texture->copySubImage(target, level, xoffset, yoffset, 0, x, y, width, height, source);
}
}
GLuint GL_APIENTRY CreateProgram(void)
{
TRACE("()");
auto context = es2::getContext();
if(context)
{
return context->createProgram();
}
return 0;
}
GLuint GL_APIENTRY CreateShader(GLenum type)
{
TRACE("(GLenum type = 0x%X)", type);
auto context = es2::getContext();
if(context)
{
switch(type)
{
case GL_FRAGMENT_SHADER:
case GL_VERTEX_SHADER:
return context->createShader(type);
default:
return error(GL_INVALID_ENUM, 0);
}
}
return 0;
}
void GL_APIENTRY CullFace(GLenum mode)
{
TRACE("(GLenum mode = 0x%X)", mode);
switch(mode)
{
case GL_FRONT:
case GL_BACK:
case GL_FRONT_AND_BACK:
{
auto context = es2::getContext();
if(context)
{
context->setCullMode(mode);
}
}
break;
default:
return error(GL_INVALID_ENUM);
}
}
void GL_APIENTRY DeleteBuffers(GLsizei n, const GLuint* buffers)
{
TRACE("(GLsizei n = %d, const GLuint* buffers = %p)", n, buffers);
if(n < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
for(int i = 0; i < n; i++)
{
context->deleteBuffer(buffers[i]);
}
}
}
void GL_APIENTRY DeleteFencesNV(GLsizei n, const GLuint* fences)
{
TRACE("(GLsizei n = %d, const GLuint* fences = %p)", n, fences);
if(n < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
for(int i = 0; i < n; i++)
{
context->deleteFence(fences[i]);
}
}
}
void GL_APIENTRY DeleteFramebuffers(GLsizei n, const GLuint* framebuffers)
{
TRACE("(GLsizei n = %d, const GLuint* framebuffers = %p)", n, framebuffers);
if(n < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
for(int i = 0; i < n; i++)
{
if(framebuffers[i] != 0) // Attempts to delete default framebuffer silently ignored.
{
context->deleteFramebuffer(framebuffers[i]);
}
}
}
}
void GL_APIENTRY DeleteProgram(GLuint program)
{
TRACE("(GLuint program = %d)", program);
if(program == 0)
{
return;
}
auto context = es2::getContext();
if(context)
{
if(!context->getProgram(program))
{
if(context->getShader(program))
{
return error(GL_INVALID_OPERATION);
}
else
{
return error(GL_INVALID_VALUE);
}
}
context->deleteProgram(program);
}
}
void GL_APIENTRY DeleteQueriesEXT(GLsizei n, const GLuint *ids)
{
TRACE("(GLsizei n = %d, const GLuint *ids = %p)", n, ids);
if(n < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
for(int i = 0; i < n; i++)
{
context->deleteQuery(ids[i]);
}
}
}
void GL_APIENTRY DeleteRenderbuffers(GLsizei n, const GLuint* renderbuffers)
{
TRACE("(GLsizei n = %d, const GLuint* renderbuffers = %p)", n, renderbuffers);
if(n < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
for(int i = 0; i < n; i++)
{
context->deleteRenderbuffer(renderbuffers[i]);
}
}
}
void GL_APIENTRY DeleteShader(GLuint shader)
{
TRACE("(GLuint shader = %d)", shader);
if(shader == 0)
{
return;
}
auto context = es2::getContext();
if(context)
{
if(!context->getShader(shader))
{
if(context->getProgram(shader))
{
return error(GL_INVALID_OPERATION);
}
else
{
return error(GL_INVALID_VALUE);
}
}
context->deleteShader(shader);
}
}
void GL_APIENTRY DeleteTextures(GLsizei n, const GLuint* textures)
{
TRACE("(GLsizei n = %d, const GLuint* textures = %p)", n, textures);
if(n < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
for(int i = 0; i < n; i++)
{
if(textures[i] != 0) // Attempts to delete default texture silently ignored.
{
context->deleteTexture(textures[i]);
}
}
}
}
void GL_APIENTRY DepthFunc(GLenum func)
{
TRACE("(GLenum func = 0x%X)", func);
switch(func)
{
case GL_NEVER:
case GL_ALWAYS:
case GL_LESS:
case GL_LEQUAL:
case GL_EQUAL:
case GL_GREATER:
case GL_GEQUAL:
case GL_NOTEQUAL:
break;
default:
return error(GL_INVALID_ENUM);
}
auto context = es2::getContext();
if(context)
{
context->setDepthFunc(func);
}
}
void GL_APIENTRY DepthMask(GLboolean flag)
{
TRACE("(GLboolean flag = %d)", flag);
auto context = es2::getContext();
if(context)
{
context->setDepthMask(flag != GL_FALSE);
}
}
void GL_APIENTRY DepthRangef(GLclampf zNear, GLclampf zFar)
{
TRACE("(GLclampf zNear = %f, GLclampf zFar = %f)", zNear, zFar);
auto context = es2::getContext();
if(context)
{
context->setDepthRange(zNear, zFar);
}
}
void GL_APIENTRY DetachShader(GLuint program, GLuint shader)
{
TRACE("(GLuint program = %d, GLuint shader = %d)", program, shader);
auto context = es2::getContext();
if(context)
{
es2::Program *programObject = context->getProgram(program);
es2::Shader *shaderObject = context->getShader(shader);
if(!programObject)
{
es2::Shader *shaderByProgramHandle;
shaderByProgramHandle = context->getShader(program);
if(!shaderByProgramHandle)
{
return error(GL_INVALID_VALUE);
}
else
{
return error(GL_INVALID_OPERATION);
}
}
if(!shaderObject)
{
es2::Program *programByShaderHandle = context->getProgram(shader);
if(!programByShaderHandle)
{
return error(GL_INVALID_VALUE);
}
else
{
return error(GL_INVALID_OPERATION);
}
}
if(!programObject->detachShader(shaderObject))
{
return error(GL_INVALID_OPERATION);
}
}
}
void GL_APIENTRY Disable(GLenum cap)
{
TRACE("(GLenum cap = 0x%X)", cap);
auto context = es2::getContext();
if(context)
{
switch(cap)
{
case GL_CULL_FACE: context->setCullFaceEnabled(false); break;
case GL_POLYGON_OFFSET_FILL: context->setPolygonOffsetFillEnabled(false); break;
case GL_SAMPLE_ALPHA_TO_COVERAGE: context->setSampleAlphaToCoverageEnabled(false); break;
case GL_SAMPLE_COVERAGE: context->setSampleCoverageEnabled(false); break;
case GL_SCISSOR_TEST: context->setScissorTestEnabled(false); break;
case GL_STENCIL_TEST: context->setStencilTestEnabled(false); break;
case GL_DEPTH_TEST: context->setDepthTestEnabled(false); break;
case GL_BLEND: context->setBlendEnabled(false); break;
case GL_DITHER: context->setDitherEnabled(false); break;
case GL_PRIMITIVE_RESTART_FIXED_INDEX: context->setPrimitiveRestartFixedIndexEnabled(false); break;
case GL_RASTERIZER_DISCARD: context->setRasterizerDiscardEnabled(false); break;
default:
return error(GL_INVALID_ENUM);
}
}
}
void GL_APIENTRY DisableVertexAttribArray(GLuint index)
{
TRACE("(GLuint index = %d)", index);
if(index >= es2::MAX_VERTEX_ATTRIBS)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
context->setVertexAttribArrayEnabled(index, false);
}
}
void GL_APIENTRY DrawArrays(GLenum mode, GLint first, GLsizei count)
{
TRACE("(GLenum mode = 0x%X, GLint first = %d, GLsizei count = %d)", mode, first, count);
switch(mode)
{
case GL_POINTS:
case GL_LINES:
case GL_LINE_LOOP:
case GL_LINE_STRIP:
case GL_TRIANGLES:
case GL_TRIANGLE_FAN:
case GL_TRIANGLE_STRIP:
break;
default:
return error(GL_INVALID_ENUM);
}
if(count < 0 || first < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
es2::TransformFeedback* transformFeedback = context->getTransformFeedback();
if(transformFeedback && transformFeedback->isActive() && (mode != transformFeedback->primitiveMode()))
{
return error(GL_INVALID_OPERATION);
}
context->drawArrays(mode, first, count);
}
}
void GL_APIENTRY DrawElements(GLenum mode, GLsizei count, GLenum type, const GLvoid* indices)
{
TRACE("(GLenum mode = 0x%X, GLsizei count = %d, GLenum type = 0x%X, const GLvoid* indices = %p)",
mode, count, type, indices);
switch(mode)
{
case GL_POINTS:
case GL_LINES:
case GL_LINE_LOOP:
case GL_LINE_STRIP:
case GL_TRIANGLES:
case GL_TRIANGLE_FAN:
case GL_TRIANGLE_STRIP:
break;
default:
return error(GL_INVALID_ENUM);
}
if(count < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
es2::TransformFeedback* transformFeedback = context->getTransformFeedback();
if(transformFeedback && transformFeedback->isActive() && !transformFeedback->isPaused())
{
return error(GL_INVALID_OPERATION);
}
switch(type)
{
case GL_UNSIGNED_BYTE:
case GL_UNSIGNED_SHORT:
case GL_UNSIGNED_INT:
break;
default:
return error(GL_INVALID_ENUM);
}
context->drawElements(mode, 0, MAX_ELEMENT_INDEX, count, type, indices);
}
}
void GL_APIENTRY DrawArraysInstancedEXT(GLenum mode, GLint first, GLsizei count, GLsizei instanceCount)
{
TRACE("(GLenum mode = 0x%X, GLint first = %d, GLsizei count = %d, GLsizei instanceCount = %d)",
mode, first, count, instanceCount);
switch(mode)
{
case GL_POINTS:
case GL_LINES:
case GL_LINE_LOOP:
case GL_LINE_STRIP:
case GL_TRIANGLES:
case GL_TRIANGLE_FAN:
case GL_TRIANGLE_STRIP:
break;
default:
return error(GL_INVALID_ENUM);
}
if(count < 0 || instanceCount < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
es2::TransformFeedback* transformFeedback = context->getTransformFeedback();
if(transformFeedback && transformFeedback->isActive() && (mode != transformFeedback->primitiveMode()))
{
return error(GL_INVALID_OPERATION);
}
context->drawArrays(mode, first, count, instanceCount);
}
}
void GL_APIENTRY DrawElementsInstancedEXT(GLenum mode, GLsizei count, GLenum type, const void *indices, GLsizei instanceCount)
{
TRACE("(GLenum mode = 0x%X, GLsizei count = %d, GLenum type = 0x%X, const void *indices = %p, GLsizei instanceCount = %d)",
mode, count, type, indices, instanceCount);
switch(mode)
{
case GL_POINTS:
case GL_LINES:
case GL_LINE_LOOP:
case GL_LINE_STRIP:
case GL_TRIANGLES:
case GL_TRIANGLE_FAN:
case GL_TRIANGLE_STRIP:
break;
default:
return error(GL_INVALID_ENUM);
}
switch(type)
{
case GL_UNSIGNED_BYTE:
case GL_UNSIGNED_SHORT:
case GL_UNSIGNED_INT:
break;
default:
return error(GL_INVALID_ENUM);
}
if(count < 0 || instanceCount < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
es2::TransformFeedback* transformFeedback = context->getTransformFeedback();
if(transformFeedback && transformFeedback->isActive() && !transformFeedback->isPaused())
{
return error(GL_INVALID_OPERATION);
}
context->drawElements(mode, 0, MAX_ELEMENT_INDEX, count, type, indices, instanceCount);
}
}
void GL_APIENTRY VertexAttribDivisorEXT(GLuint index, GLuint divisor)
{
TRACE("(GLuint index = %d, GLuint divisor = %d)", index, divisor);
auto context = es2::getContext();
if(context)
{
if(index >= es2::MAX_VERTEX_ATTRIBS)
{
return error(GL_INVALID_VALUE);
}
context->setVertexAttribDivisor(index, divisor);
}
}
void GL_APIENTRY DrawArraysInstancedANGLE(GLenum mode, GLint first, GLsizei count, GLsizei instanceCount)
{
TRACE("(GLenum mode = 0x%X, GLint first = %d, GLsizei count = %d, GLsizei instanceCount = %d)",
mode, first, count, instanceCount);
switch(mode)
{
case GL_POINTS:
case GL_LINES:
case GL_LINE_LOOP:
case GL_LINE_STRIP:
case GL_TRIANGLES:
case GL_TRIANGLE_FAN:
case GL_TRIANGLE_STRIP:
break;
default:
return error(GL_INVALID_ENUM);
}
if(count < 0 || instanceCount < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
if(!context->hasZeroDivisor())
{
return error(GL_INVALID_OPERATION);
}
es2::TransformFeedback* transformFeedback = context->getTransformFeedback();
if(transformFeedback && transformFeedback->isActive() && (mode != transformFeedback->primitiveMode()))
{
return error(GL_INVALID_OPERATION);
}
context->drawArrays(mode, first, count, instanceCount);
}
}
void GL_APIENTRY DrawElementsInstancedANGLE(GLenum mode, GLsizei count, GLenum type, const void *indices, GLsizei instanceCount)
{
TRACE("(GLenum mode = 0x%X, GLsizei count = %d, GLenum type = 0x%X, const void *indices = %p, GLsizei instanceCount = %d)",
mode, count, type, indices, instanceCount);
switch(mode)
{
case GL_POINTS:
case GL_LINES:
case GL_LINE_LOOP:
case GL_LINE_STRIP:
case GL_TRIANGLES:
case GL_TRIANGLE_FAN:
case GL_TRIANGLE_STRIP:
break;
default:
return error(GL_INVALID_ENUM);
}
switch(type)
{
case GL_UNSIGNED_BYTE:
case GL_UNSIGNED_SHORT:
case GL_UNSIGNED_INT:
break;
default:
return error(GL_INVALID_ENUM);
}
if(count < 0 || instanceCount < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
if(!context->hasZeroDivisor())
{
return error(GL_INVALID_OPERATION);
}
es2::TransformFeedback* transformFeedback = context->getTransformFeedback();
if(transformFeedback && transformFeedback->isActive() && !transformFeedback->isPaused())
{
return error(GL_INVALID_OPERATION);
}
context->drawElements(mode, 0, MAX_ELEMENT_INDEX, count, type, indices, instanceCount);
}
}
void GL_APIENTRY VertexAttribDivisorANGLE(GLuint index, GLuint divisor)
{
TRACE("(GLuint index = %d, GLuint divisor = %d)", index, divisor);
auto context = es2::getContext();
if(context)
{
if(index >= MAX_VERTEX_ATTRIBS)
{
return error(GL_INVALID_VALUE);
}
context->setVertexAttribDivisor(index, divisor);
}
}
void GL_APIENTRY Enable(GLenum cap)
{
TRACE("(GLenum cap = 0x%X)", cap);
auto context = es2::getContext();
if(context)
{
switch(cap)
{
case GL_CULL_FACE: context->setCullFaceEnabled(true); break;
case GL_POLYGON_OFFSET_FILL: context->setPolygonOffsetFillEnabled(true); break;
case GL_SAMPLE_ALPHA_TO_COVERAGE: context->setSampleAlphaToCoverageEnabled(true); break;
case GL_SAMPLE_COVERAGE: context->setSampleCoverageEnabled(true); break;
case GL_SCISSOR_TEST: context->setScissorTestEnabled(true); break;
case GL_STENCIL_TEST: context->setStencilTestEnabled(true); break;
case GL_DEPTH_TEST: context->setDepthTestEnabled(true); break;
case GL_BLEND: context->setBlendEnabled(true); break;
case GL_DITHER: context->setDitherEnabled(true); break;
case GL_PRIMITIVE_RESTART_FIXED_INDEX: context->setPrimitiveRestartFixedIndexEnabled(true); break;
case GL_RASTERIZER_DISCARD: context->setRasterizerDiscardEnabled(true); break;
default:
return error(GL_INVALID_ENUM);
}
}
}
void GL_APIENTRY EnableVertexAttribArray(GLuint index)
{
TRACE("(GLuint index = %d)", index);
if(index >= es2::MAX_VERTEX_ATTRIBS)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
context->setVertexAttribArrayEnabled(index, true);
}
}
void GL_APIENTRY EndQueryEXT(GLenum target)
{
TRACE("GLenum target = 0x%X)", target);
switch(target)
{
case GL_ANY_SAMPLES_PASSED_EXT:
case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT:
break;
default:
return error(GL_INVALID_ENUM);
}
auto context = es2::getContext();
if(context)
{
context->endQuery(target);
}
}
void GL_APIENTRY FinishFenceNV(GLuint fence)
{
TRACE("(GLuint fence = %d)", fence);
auto context = es2::getContext();
if(context)
{
es2::Fence *fenceObject = context->getFence(fence);
if(!fenceObject)
{
return error(GL_INVALID_OPERATION);
}
fenceObject->finishFence();
}
}
void GL_APIENTRY Finish(void)
{
TRACE("()");
auto context = es2::getContext();
if(context)
{
context->finish();
}
}
void GL_APIENTRY Flush(void)
{
TRACE("()");
auto context = es2::getContext();
if(context)
{
context->flush();
}
}
void GL_APIENTRY FramebufferRenderbuffer(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer)
{
TRACE("(GLenum target = 0x%X, GLenum attachment = 0x%X, GLenum renderbuffertarget = 0x%X, "
"GLuint renderbuffer = %d)", target, attachment, renderbuffertarget, renderbuffer);
if((target != GL_FRAMEBUFFER && target != GL_DRAW_FRAMEBUFFER && target != GL_READ_FRAMEBUFFER) ||
(renderbuffertarget != GL_RENDERBUFFER && renderbuffer != 0))
{
return error(GL_INVALID_ENUM);
}
auto context = es2::getContext();
if(context)
{
es2::Framebuffer *framebuffer = nullptr;
GLuint framebufferName = 0;
if(target == GL_READ_FRAMEBUFFER)
{
framebuffer = context->getReadFramebuffer();
framebufferName = context->getReadFramebufferName();
}
else
{
framebuffer = context->getDrawFramebuffer();
framebufferName = context->getDrawFramebufferName();
}
if(!framebuffer || framebufferName == 0)
{
return error(GL_INVALID_OPERATION);
}
// [OpenGL ES 2.0.25] Section 4.4.3 page 112
// [OpenGL ES 3.0.2] Section 4.4.2 page 201
// 'renderbuffer' must be either zero or the name of an existing renderbuffer object of
// type 'renderbuffertarget', otherwise an INVALID_OPERATION error is generated.
if(renderbuffer != 0)
{
if(!context->getRenderbuffer(renderbuffer))
{
return error(GL_INVALID_OPERATION);
}
}
switch(attachment)
{
case GL_DEPTH_ATTACHMENT:
framebuffer->setDepthbuffer(GL_RENDERBUFFER, renderbuffer);
break;
case GL_STENCIL_ATTACHMENT:
framebuffer->setStencilbuffer(GL_RENDERBUFFER, renderbuffer);
break;
case GL_DEPTH_STENCIL_ATTACHMENT:
framebuffer->setDepthbuffer(GL_RENDERBUFFER, renderbuffer);
framebuffer->setStencilbuffer(GL_RENDERBUFFER, renderbuffer);
break;
default:
if(attachment < GL_COLOR_ATTACHMENT0 || attachment > GL_COLOR_ATTACHMENT31)
{
return error(GL_INVALID_ENUM);
}
if((attachment - GL_COLOR_ATTACHMENT0) >= MAX_COLOR_ATTACHMENTS)
{
return error(GL_INVALID_OPERATION);
}
framebuffer->setColorbuffer(GL_RENDERBUFFER, renderbuffer, attachment - GL_COLOR_ATTACHMENT0);
break;
}
}
}
void GL_APIENTRY FramebufferTexture2D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level)
{
TRACE("(GLenum target = 0x%X, GLenum attachment = 0x%X, GLenum textarget = 0x%X, "
"GLuint texture = %d, GLint level = %d)", target, attachment, textarget, texture, level);
if(target != GL_FRAMEBUFFER && target != GL_DRAW_FRAMEBUFFER && target != GL_READ_FRAMEBUFFER)
{
return error(GL_INVALID_ENUM);
}
auto context = es2::getContext();
if(context)
{
if(texture == 0)
{
textarget = GL_NONE;
}
else
{
es2::Texture *tex = context->getTexture(texture);
if(!tex)
{
return error(GL_INVALID_OPERATION);
}
switch(textarget)
{
case GL_TEXTURE_2D:
if(tex->getTarget() != GL_TEXTURE_2D)
{
return error(GL_INVALID_OPERATION);
}
break;
case GL_TEXTURE_RECTANGLE_ARB:
if(tex->getTarget() != GL_TEXTURE_RECTANGLE_ARB)
{
return error(GL_INVALID_OPERATION);
}
break;
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
if(tex->getTarget() != GL_TEXTURE_CUBE_MAP)
{
return error(GL_INVALID_OPERATION);
}
break;
default:
return error(GL_INVALID_ENUM);
}
if((textarget == GL_TEXTURE_RECTANGLE_ARB) && (level != 0))
{
return error(GL_INVALID_VALUE);
}
if((level < 0) || (level >= es2::IMPLEMENTATION_MAX_TEXTURE_LEVELS))
{
return error(GL_INVALID_VALUE);
}
if(tex->isCompressed(textarget, level))
{
return error(GL_INVALID_OPERATION);
}
}
es2::Framebuffer *framebuffer = nullptr;
GLuint framebufferName = 0;
if(target == GL_READ_FRAMEBUFFER)
{
framebuffer = context->getReadFramebuffer();
framebufferName = context->getReadFramebufferName();
}
else
{
framebuffer = context->getDrawFramebuffer();
framebufferName = context->getDrawFramebufferName();
}
if(framebufferName == 0 || !framebuffer)
{
return error(GL_INVALID_OPERATION);
}
switch(attachment)
{
case GL_DEPTH_ATTACHMENT: framebuffer->setDepthbuffer(textarget, texture, level); break;
case GL_STENCIL_ATTACHMENT: framebuffer->setStencilbuffer(textarget, texture, level); break;
case GL_DEPTH_STENCIL_ATTACHMENT:
framebuffer->setDepthbuffer(textarget, texture, level);
framebuffer->setStencilbuffer(textarget, texture, level);
break;
default:
if(attachment < GL_COLOR_ATTACHMENT0 || attachment > GL_COLOR_ATTACHMENT31)
{
return error(GL_INVALID_ENUM);
}
if((attachment - GL_COLOR_ATTACHMENT0) >= MAX_COLOR_ATTACHMENTS)
{
return error(GL_INVALID_OPERATION);
}
framebuffer->setColorbuffer(textarget, texture, attachment - GL_COLOR_ATTACHMENT0, level);
break;
}
}
}
void GL_APIENTRY FrontFace(GLenum mode)
{
TRACE("(GLenum mode = 0x%X)", mode);
switch(mode)
{
case GL_CW:
case GL_CCW:
{
auto context = es2::getContext();
if(context)
{
context->setFrontFace(mode);
}
}
break;
default:
return error(GL_INVALID_ENUM);
}
}
void GL_APIENTRY GenBuffers(GLsizei n, GLuint* buffers)
{
TRACE("(GLsizei n = %d, GLuint* buffers = %p)", n, buffers);
if(n < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
for(int i = 0; i < n; i++)
{
buffers[i] = context->createBuffer();
}
}
}
void GL_APIENTRY GenerateMipmap(GLenum target)
{
TRACE("(GLenum target = 0x%X)", target);
auto context = es2::getContext();
if(context)
{
es2::Texture *texture = context->getTargetTexture(target);
if(!texture)
{
return;
}
if(!IsMipmappable(texture->getFormat(target, texture->getBaseLevel())))
{
return error(GL_INVALID_OPERATION);
}
if(target == GL_TEXTURE_CUBE_MAP)
{
TextureCubeMap *cube = context->getTextureCubeMap();
if(!cube->isCubeComplete())
{
return error(GL_INVALID_OPERATION);
}
}
// [OpenGL ES 3.2]: "Otherwise, if levelbase is not defined, or if any dimension
// is zero, all mipmap levels are left unchanged. This is not an error."
if(!texture->isBaseLevelDefined())
{
return;
}
texture->generateMipmaps();
}
}
void GL_APIENTRY GenFencesNV(GLsizei n, GLuint* fences)
{
TRACE("(GLsizei n = %d, GLuint* fences = %p)", n, fences);
if(n < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
for(int i = 0; i < n; i++)
{
fences[i] = context->createFence();
}
}
}
void GL_APIENTRY GenFramebuffers(GLsizei n, GLuint* framebuffers)
{
TRACE("(GLsizei n = %d, GLuint* framebuffers = %p)", n, framebuffers);
if(n < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
for(int i = 0; i < n; i++)
{
framebuffers[i] = context->createFramebuffer();
}
}
}
void GL_APIENTRY GenQueriesEXT(GLsizei n, GLuint* ids)
{
TRACE("(GLsizei n = %d, GLuint* ids = %p)", n, ids);
if(n < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
for(int i = 0; i < n; i++)
{
ids[i] = context->createQuery();
}
}
}
void GL_APIENTRY GenRenderbuffers(GLsizei n, GLuint* renderbuffers)
{
TRACE("(GLsizei n = %d, GLuint* renderbuffers = %p)", n, renderbuffers);
if(n < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
for(int i = 0; i < n; i++)
{
renderbuffers[i] = context->createRenderbuffer();
}
}
}
void GL_APIENTRY GenTextures(GLsizei n, GLuint* textures)
{
TRACE("(GLsizei n = %d, GLuint* textures = %p)", n, textures);
if(n < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
for(int i = 0; i < n; i++)
{
textures[i] = context->createTexture();
}
}
}
void GL_APIENTRY GetActiveAttrib(GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, GLchar *name)
{
TRACE("(GLuint program = %d, GLuint index = %d, GLsizei bufsize = %d, GLsizei *length = %p, "
"GLint *size = %p, GLenum *type = %p, GLchar *name = %p)",
program, index, bufsize, length, size, type, name);
if(bufsize < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
es2::Program *programObject = context->getProgram(program);
if(!programObject)
{
if(context->getShader(program))
{
return error(GL_INVALID_OPERATION);
}
else
{
return error(GL_INVALID_VALUE);
}
}
if(index >= programObject->getActiveAttributeCount())
{
return error(GL_INVALID_VALUE);
}
programObject->getActiveAttribute(index, bufsize, length, size, type, name);
}
}
void GL_APIENTRY GetActiveUniform(GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, GLchar* name)
{
TRACE("(GLuint program = %d, GLuint index = %d, GLsizei bufsize = %d, "
"GLsizei* length = %p, GLint* size = %p, GLenum* type = %p, GLchar* name = %s)",
program, index, bufsize, length, size, type, name);
if(bufsize < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
es2::Program *programObject = context->getProgram(program);
if(!programObject)
{
if(context->getShader(program))
{
return error(GL_INVALID_OPERATION);
}
else
{
return error(GL_INVALID_VALUE);
}
}
if(index >= programObject->getActiveUniformCount())
{
return error(GL_INVALID_VALUE);
}
programObject->getActiveUniform(index, bufsize, length, size, type, name);
}
}
void GL_APIENTRY GetAttachedShaders(GLuint program, GLsizei maxcount, GLsizei* count, GLuint* shaders)
{
TRACE("(GLuint program = %d, GLsizei maxcount = %d, GLsizei* count = %p, GLuint* shaders = %p)",
program, maxcount, count, shaders);
if(maxcount < 0)
{
return error(GL_INVALID_VALUE);
}
auto context = es2::getContext();
if(context)
{
es2::Program *programObject = context->getProgram(program);
if(!programObject)
{
if(context->getShader(program))
{
return error(GL_INVALID_OPERATION);
}
else
{
return error(GL_INVALID_VALUE);
}
}
return programObject->getAttachedShaders(maxcount, count, shaders);
}
}
int GL_APIENTRY GetAttribLocation(GLuint program, const GLchar* name)
{
TRACE("(GLuint program = %d, const GLchar* name = %s)", program, name);
auto context = es2::getContext();
if(context)
{
es2::Program *programObject = context->getProgram(program);
if(!programObject)
{
if(context->getShader(program))
{
return error(GL_INVALID_OPERATION, -1);
}
else
{
return error(GL_INVALID_VALUE, -1);
}
}
if(!programObject->isLinked())
{
return error(GL_INVALID_OPERATION, -1);
}
return programObject->getAttributeLocation(name);
}
return -1;
}
void GL_APIENTRY GetBooleanv(GLenum pname, GLboolean* params)
{
TRACE("(GLenum pname = 0x%X, GLboolean* params = %p)", pname, params);
auto context = es2::getContext();
if(context)
{
if(!(context->getBooleanv(pname, params)))
{
GLenum nativeType;
unsigned int numParams = 0;
if(!context->getQueryParameterInfo(pname, &nativeType, &numParams))
return error(GL_INVALID_ENUM);
if(numParams == 0)
return; // it is known that the pname is valid, but there are no parameters to return
if(nativeType == GL_FLOAT)
{
GLfloat *floatParams = nullptr;
floatParams = new GLfloat[numParams];
context->getFloatv(pname, floatParams);
for(unsigned int i = 0; i < numParams; ++i)
{
if(floatParams[i] == 0.0f)
params[i] = GL_FALSE;
else
params[i] = GL_TRUE;
}
delete [] floatParams;
}
else if(nativeType == GL_INT)
{
GLint *intParams = nullptr;
intParams = new GLint[numParams];
context->getIntegerv(pname, intParams);
for(unsigned int i = 0; i < numParams; ++i)
{
if(intParams[i] == 0)
params[i] = GL_FALSE;
else
params[i] = GL_TRUE;
}
delete [] intParams;
}
}
}
}
void GL_APIENTRY GetBufferParameteriv(GLenum target, GLenum pname, GLint* params)
{
TRACE("(GLenum target = 0x%X, GLenum pname = 0x%X, GLint* params = %p)", target, pname, params);
auto context = es2::getContext();
if(context)
{
es2::Buffer *buffer;
if(!context->getBuffer(target, &buffer))
{
return error(GL_INVALID_ENUM);
}
if(!buffer)
{
// A null buffer means that "0" is bound to the requested buffer target
return error(GL_INVALID_OPERATION);
}
switch(pname)
{
case GL_BUFFER_USAGE:
*params = buffer->usage();
break;
case GL_BUFFER_SIZE:
*params = (GLint)buffer->size();
break;
case GL_BUFFER_ACCESS_FLAGS:
*params = buffer->access();
break;
case GL_BUFFER_MAPPED:
*params = buffer->isMapped();
break;
case GL_BUFFER_MAP_LENGTH:
*params = (GLint)buffer->length();
break;
case GL_BUFFER_MAP_OFFSET:
*params = (GLint)buffer->offset();
break;
default:
return error(GL_INVALID_ENUM);
}
}
}
GLenum GL_APIENTRY GetError(void)
{
TRACE("()");
auto context = es2::getContext();
if(context)
{
return context->getError();
}
return GL_NO_ERROR;
}
void GL_APIENTRY GetFenceivNV(GLuint fence, GLenum pname, GLint *params)
{
TRACE("(GLuint fence = %d, GLenum pname = 0x%X, GLint *params = %p)", fence, pname, params);
auto context = es2::getContext();
if(context)
{
es2::Fence *fenceObject = context->getFence(fence);
if(!fenceObject)
{
return error(GL_INVALID_OPERATION);
}
fenceObject->getFenceiv(pname, params);
}
}
void GL_APIENTRY GetFloatv(GLenum pname, GLfloat* params)
{
TRACE("(GLenum pname = 0x%X, GLfloat* params = %p)", pname, params);
auto context = es2::getContext();
if(context)
{
if(!(context->getFloatv(pname, params)))
{
GLenum nativeType;
unsigned int numParams = 0;
if(!context->getQueryParameterInfo(pname, &nativeType, &numParams))
return error(GL_INVALID_ENUM);
if(numParams == 0)
return; // it is known that the pname is valid, but that there are no parameters to return.
if(nativeType == GL_BOOL)
{
GLboolean *boolParams = nullptr;
boolParams = new GLboolean[numParams];
context->getBooleanv(pname, boolParams);
for(unsigned int i = 0; i < numParams; ++i)
{
if(boolParams[i] == GL_FALSE)
params[i] = 0.0f;
else
params[i] = 1.0f;
}
delete [] boolParams;
}
else if(nativeType == GL_INT)
{
GLint *intParams = nullptr;
intParams = new GLint[numParams];
context->getIntegerv(pname, intParams);
for(unsigned int i = 0; i < numParams; ++i)
{
params[i] = (GLfloat)intParams[i];
}
delete [] intParams;
}
}
}
}
void GL_APIENTRY GetFramebufferAttachmentParameteriv(GLenum target, GLenum attachment, GLenum pname, GLint* params)
{
TRACE("(GLenum target = 0x%X, GLenum attachment = 0x%X, GLenum pname = 0x%X, GLint* params = %p)",
target, attachment, pname, params);
auto context = es2::getContext();
if(context)
{
if(target != GL_FRAMEBUFFER && target != GL_DRAW_FRAMEBUFFER && target != GL_READ_FRAMEBUFFER)
{
return error(GL_INVALID_ENUM);
}
GLuint framebufferName = 0;
if(target == GL_READ_FRAMEBUFFER)
{
framebufferName = context->getReadFramebufferName();
}
else
{
framebufferName = context->getDrawFramebufferName();
}
switch(attachment)
{
case GL_BACK:
case GL_DEPTH:
case GL_STENCIL:
if(framebufferName != 0)
{
return error(GL_INVALID_OPERATION);
}
break;
case GL_DEPTH_ATTACHMENT:
case GL_STENCIL_ATTACHMENT:
if(framebufferName == 0)
{
return error(GL_INVALID_OPERATION);
}
break;
case GL_DEPTH_STENCIL_ATTACHMENT:
if(framebufferName == 0)
{
return error(GL_INVALID_OPERATION);
}
break;
default:
if(framebufferName == 0)
{
return error(GL_INVALID_OPERATION);
}
if(attachment < GL_COLOR_ATTACHMENT0 || attachment > GL_COLOR_ATTACHMENT31)
{
return error(GL_INVALID_ENUM);
}
if((attachment - GL_COLOR_ATTACHMENT0) >= MAX_COLOR_ATTACHMENTS)
{
return error(GL_INVALID_OPERATION);
}
break;
}
es2::Framebuffer *framebuffer = context->getFramebuffer(framebufferName);
if(!framebuffer)
{
return error(GL_INVALID_OPERATION);
}
GLenum attachmentType;
GLuint attachmentHandle;
GLint attachmentLayer;
Renderbuffer *renderbuffer = nullptr;
switch(attachment)
{
case GL_BACK:
attachmentType = framebuffer->getColorbufferType(0);
attachmentHandle = framebuffer->getColorbufferName(0);
attachmentLayer = framebuffer->getColorbufferLayer(0);
renderbuffer = framebuffer->getColorbuffer(0);
break;
case GL_DEPTH:
case GL_DEPTH_ATTACHMENT:
attachmentType = framebuffer->getDepthbufferType();
attachmentHandle = framebuffer->getDepthbufferName();
attachmentLayer = framebuffer->getDepthbufferLayer();
renderbuffer = framebuffer->getDepthbuffer();
break;
case GL_STENCIL:
case GL_STENCIL_ATTACHMENT:
attachmentType = framebuffer->getStencilbufferType();
attachmentHandle = framebuffer->getStencilbufferName();
attachmentLayer = framebuffer->getStencilbufferLayer();
renderbuffer = framebuffer->getStencilbuffer();
break;
case GL_DEPTH_STENCIL_ATTACHMENT:
attachmentType = framebuffer->getDepthbufferType();
attachmentHandle = framebuffer->getDepthbufferName();
attachmentLayer = framebuffer->getDepthbufferLayer();
renderbuffer = framebuffer->getDepthbuffer();
if(attachmentHandle != framebuffer->getStencilbufferName())
{
// Different attachments to DEPTH and STENCIL, query fails
return error(GL_INVALID_OPERATION);
}
break;
default:
ASSERT((unsigned int)(attachment - GL_COLOR_ATTACHMENT0) < MAX_COLOR_ATTACHMENTS);
attachmentType = framebuffer->getColorbufferType(attachment - GL_COLOR_ATTACHMENT0);
attachmentHandle = framebuffer->getColorbufferName(attachment - GL_COLOR_ATTACHMENT0);
attachmentLayer = framebuffer->getColorbufferLayer(attachment - GL_COLOR_ATTACHMENT0);
renderbuffer = framebuffer->getColorbuffer(attachment - GL_COLOR_ATTACHMENT0);
break;
}
GLenum attachmentObjectType = GL_NONE; // Type category
if(framebufferName == 0)
{
attachmentObjectType = GL_FRAMEBUFFER_DEFAULT;
}
else if(attachmentType == GL_NONE || Framebuffer::IsRenderbuffer(attachmentType))
{
attachmentObjectType = attachmentType;
}
else if(es2::IsTextureTarget(attachmentType))
{
attachmentObjectType = GL_TEXTURE;
}
else UNREACHABLE(attachmentType);
if(attachmentObjectType != GL_NONE)
{
switch(pname)
{
case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE:
*params = attachmentObjectType;
break;
case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME:
if(attachmentObjectType == GL_RENDERBUFFER || attachmentObjectType == GL_TEXTURE)
{
*params = attachmentHandle;
}
else
{
return error(GL_INVALID_ENUM);
}
break;
case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL:
if(attachmentObjectType == GL_TEXTURE)
{
*params = renderbuffer->getLevel();
}
else
{
return error(GL_INVALID_ENUM);
}
break;
case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE:
if(attachmentObjectType == GL_TEXTURE)
{
if(es2::IsCubemapTextureTarget(attachmentType))
{
*params = attachmentType;
}
else
{
*params = 0;
}
}
else
{
return error(GL_INVALID_ENUM);
}
break;
case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER:
*params = attachmentLayer;
break;
case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
*params = renderbuffer->getRedSize();
break;
case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
*params = renderbuffer->getGreenSize();
break;
case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
*params = renderbuffer->getBlueSize();
break;
case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
*params = renderbuffer->getAlphaSize();
break;
case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
*params = renderbuffer->getDepthSize();
break;
case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
*params = renderbuffer->getStencilSize();
break;
case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:
// case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE_EXT: // GL_EXT_color_buffer_half_float
if(attachment == GL_DEPTH_STENCIL_ATTACHMENT)
{
return error(GL_INVALID_OPERATION);
}
*params = GetComponentType(renderbuffer->getFormat(), attachment);
break;
case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:
*params = GetColorEncoding(renderbuffer->getFormat());
break;
default:
return error(GL_INVALID_ENUM);
}
}
else
{
// ES 2.0.25 spec pg 127 states that if the value of FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE
// is NONE, then querying any other pname will generate INVALID_ENUM.
// ES 3.0.2 spec pg 235 states that if the attachment type is none,
// GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME will return zero and be an
// INVALID_OPERATION for all other pnames
switch(pname)
{
case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE:
*params = GL_NONE;
break;
case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME:
*params = 0;
break;
default:
return error(GL_INVALID_OPERATION);
}
}
}
}
GLenum GL_APIENTRY GetGraphicsResetStatusEXT(void)
{
TRACE("()");
return GL_NO_ERROR;
}
void GL_APIENTRY GetIntegerv(GLenum pname, GLint* params)
{
TRACE("(GLenum pname = 0x%X, GLint* params = %p)", pname, params);
auto context = es2::getContext();
if(!context)
{
// Not strictly an error, but probably unintended or attempting to rely on non-compliant behavior
ERR("glGetIntegerv() called without current context.");
// This is not spec compliant! When there is no current GL context, functions should
// have no side effects. Google Maps queries these values before creating a context,
// so we need this as a bug-compatible workaround.
switch(pname)
{
case GL_MAX_TEXTURE_SIZE: *params = es2::IMPLEMENTATION_MAX_TEXTURE_SIZE; return;
case GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS: *params = es2::MAX_VERTEX_TEXTURE_IMAGE_UNITS; return;
case GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS: *params = es2::MAX_COMBINED_TEXTURE_IMAGE_UNITS; return;
case GL_STENCIL_BITS: *params = 8; return;
case GL_ALIASED_LINE_WIDTH_RANGE:
params[0] = (GLint)es2::ALIASED_LINE_WIDTH_RANGE_MIN;
params[1] = (GLint)es2::ALIASED_LINE_WIDTH_RANGE_MAX;
return;
}
}
if(context)
{
if(!(context->getIntegerv(pname, params)))
{
GLenum nativeType;
unsigned int numParams = 0;
if(!context->getQueryParameterInfo(pname, &nativeType, &numParams))
return error(GL_INVALID_ENUM);
if(numParams == 0)
return; // it is known that pname is valid, but there are no parameters to return
if(nativeType == GL_BOOL)
{
GLboolean *boolParams = nullptr;
boolParams = new GLboolean[numParams];
context->getBooleanv(pname, boolParams);
for(unsigned int i = 0; i < numParams; ++i)
{
params[i] = (boolParams[i] == GL_FALSE) ? 0 : 1;
}
delete [] boolParams;
}
else if(nativeType == GL_FLOAT)
{
GLfloat *floatParams = nullptr;
floatParams = new GLfloat[numParams];
context->getFloatv(pname, floatParams);
for(unsigned int i = 0; i < numParams; ++i)
{
if(pname == GL_DEPTH_RANGE || pname == GL_COLOR_CLEAR_VALUE || pname == GL_DEPTH_CLEAR_VALUE || pname == GL_BLEND_COLOR)
{
params[i] = convert_float_fixed(floatParams[i]);
}
else
{
params[i] = (GLint)(floatParams[i] > 0.0f ? floor(floatParams[i] + 0.5) : ceil(floatParams[i] - 0.5));
}
}
delete [] floatParams;
}
}
}
}
void GL_APIENTRY GetProgramiv(GLuint program, GLenum pname, GLint* params)
{
TRACE("(GLuint program = %d, GLenum pname = 0x%X, GLint* params = %p)", program, pname, params);
auto context = es2::getContext();
if(context)
{