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Enabled new buffer functionality in ES 3.1.

pull/68/head
Vladimír Vondruš 12 years ago
parent
74a33df246
commit
ea164f697d
4 changed files with 54 additions and 40 deletions
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  1. 22
      src/Magnum/Buffer.cpp
  2. 46
      src/Magnum/Buffer.h
  3. 18
      src/Magnum/Implementation/BufferState.cpp
  4. 8
      src/Magnum/Implementation/BufferState.h

22
src/Magnum/Buffer.cpp
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@ -48,9 +48,15 @@ Int Buffer::minMapAlignment() {
return value;
}
#endif
#ifndef MAGNUM_TARGET_GLES2
Int Buffer::maxAtomicCounterBindings() {
#ifndef MAGNUM_TARGET_GLES
if(!Context::current()->isExtensionSupported<Extensions::GL::ARB::shader_atomic_counters>())
#else
if(!Context::current()->isVersionSupported(Version::GLES310))
#endif
return 0;
GLint& value = Context::current()->state().buffer->maxAtomicCounterBindings;
@ -62,7 +68,11 @@ Int Buffer::maxAtomicCounterBindings() {
}
Int Buffer::maxShaderStorageBindings() {
#ifndef MAGNUM_TARGET_GLES
if(!Context::current()->isExtensionSupported<Extensions::GL::ARB::shader_storage_buffer_object>())
#else
if(!Context::current()->isVersionSupported(Version::GLES310))
#endif
return 0;
GLint& value = Context::current()->state().buffer->maxShaderStorageBindings;
@ -74,7 +84,11 @@ Int Buffer::maxShaderStorageBindings() {
}
Int Buffer::shaderStorageOffsetAlignment() {
#ifndef MAGNUM_TARGET_GLES
if(!Context::current()->isExtensionSupported<Extensions::GL::ARB::shader_storage_buffer_object>())
#else
if(!Context::current()->isVersionSupported(Version::GLES310))
#endif
return 0;
GLint& value = Context::current()->state().buffer->shaderStorageOffsetAlignment;
@ -396,14 +410,10 @@ Debug operator<<(Debug debug, Buffer::Target value) {
switch(value) {
#define _c(value) case Buffer::Target::value: return debug << "Buffer::Target::" #value;
_c(Array)
#ifndef MAGNUM_TARGET_GLES
_c(AtomicCounter)
#endif
#ifndef MAGNUM_TARGET_GLES2
_c(AtomicCounter)
_c(CopyRead)
_c(CopyWrite)
#endif
#ifndef MAGNUM_TARGET_GLES
_c(DispatchIndirect)
_c(DrawIndirect)
#endif
@ -411,9 +421,9 @@ Debug operator<<(Debug debug, Buffer::Target value) {
#ifndef MAGNUM_TARGET_GLES2
_c(PixelPack)
_c(PixelUnpack)
_c(ShaderStorage)
#endif
#ifndef MAGNUM_TARGET_GLES
_c(ShaderStorage)
_c(Texture)
#endif
#ifndef MAGNUM_TARGET_GLES2

46
src/Magnum/Buffer.h
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@ -219,11 +219,12 @@ class MAGNUM_EXPORT Buffer: public AbstractObject {
/** Used for storing vertex attributes. */
Array = GL_ARRAY_BUFFER,
#ifndef MAGNUM_TARGET_GLES
#ifndef MAGNUM_TARGET_GLES2
/**
* Used for storing atomic counters.
* @requires_gl42 %Extension @extension{ARB,shader_atomic_counters}
* @requires_gl Atomic counters are not available in OpenGL ES.
* @requires_gles31 Atomic counters are not available in OpenGL ES
* 3.0 and older.
*/
AtomicCounter = GL_ATOMIC_COUNTER_BUFFER,
#endif
@ -246,18 +247,20 @@ class MAGNUM_EXPORT Buffer: public AbstractObject {
CopyWrite = GL_COPY_WRITE_BUFFER,
#endif
#ifndef MAGNUM_TARGET_GLES
#ifndef MAGNUM_TARGET_GLES2
/**
* Indirect compute dispatch commands.
* @requires_gl43 %Extension @extension{ARB,compute_shader}
* @requires_gl Compute shaders are not available in OpenGL ES.
* @requires_gles31 Compute shaders are not available in OpenGL ES
* 3.0 and older.
*/
DispatchIndirect = GL_DISPATCH_INDIRECT_BUFFER,
/**
* Used for supplying arguments for indirect drawing.
* @requires_gl40 %Extension @extension{ARB,draw_indirect}
* @requires_gl Indirect drawing not available in OpenGL ES.
* @requires_gles31 Indirect drawing not available in OpenGL ES 3.0
* and older.
*/
DrawIndirect = GL_DRAW_INDIRECT_BUFFER,
#endif
@ -283,14 +286,17 @@ class MAGNUM_EXPORT Buffer: public AbstractObject {
PixelUnpack = GL_PIXEL_UNPACK_BUFFER,
#endif
#ifndef MAGNUM_TARGET_GLES
#ifndef MAGNUM_TARGET_GLES2
/**
* Used for shader storage.
* @requires_gl43 %Extension @extension{ARB,shader_storage_buffer_object}
* @requires_gl Shader storage is not available in OpenGL ES.
* @requires_gles31 Shader storage is not available in OpenGL ES
* 3.0 and older.
*/
ShaderStorage = GL_SHADER_STORAGE_BUFFER,
#endif
#ifndef MAGNUM_TARGET_GLES
/**
* Source for texel fetches. See @ref BufferTexture.
* @requires_gl31 %Extension @extension{ARB,texture_buffer_object}
@ -442,21 +448,23 @@ class MAGNUM_EXPORT Buffer: public AbstractObject {
* @brief Minimal supported mapping alignment
*
* The result is cached, repeated queries don't result in repeated
* OpenGL calls. If extension @extension{ARB,map_buffer_alignment} is
* not available, returns `0`.
* OpenGL calls. If extension @extension{ARB,map_buffer_alignment}
* (part of OpenGL 4.2) is not available, returns `0`.
* @see @ref map(), @fn_gl{Get} with @def_gl{MIN_MAP_BUFFER_ALIGNMENT}
* @requires_gl No minimal value is specified for OpenGL ES.
*/
static Int minMapAlignment();
#endif
#ifndef MAGNUM_TARGET_GLES2
/**
* @brief Max supported atomic counter buffer binding count
*
* The result is cached, repeated queries don't result in repeated
* OpenGL calls. If extension @extension{ARB,shader_atomic_counters} is
* not available, returns `0`.
* OpenGL calls. If neither extension @extension{ARB,shader_atomic_counters}
* (part of OpenGL 4.2) nor OpenGL ES 3.1 is available, returns `0`.
* @see @fn_gl{Get} with @def_gl{MAX_ATOMIC_COUNTER_BUFFER_BINDINGS}
* @requires_gl Atomic counters are not available in OpenGL ES.
* @requires_gles30 Not defined in OpenGL ES 2.0
*/
static Int maxAtomicCounterBindings();
@ -464,10 +472,10 @@ class MAGNUM_EXPORT Buffer: public AbstractObject {
* @brief Max supported shader storage buffer binding count
*
* The result is cached, repeated queries don't result in repeated
* OpenGL calls. If extension @extension{ARB,shader_storage_buffer_object}
* is not available, returns `0`.
* OpenGL calls. If neither extension @extension{ARB,shader_storage_buffer_object}
* (part of OpenGL 4.3) nor OpenGL ES 3.1 is available, returns `0`.
* @see @fn_gl{Get} with @def_gl{MAX_SHADER_STORAGE_BUFFER_BINDINGS}
* @requires_gl Atomic counters are not available in OpenGL ES.
* @requires_gles30 Not defined in OpenGL ES 2.0
*/
static Int maxShaderStorageBindings();
@ -475,10 +483,10 @@ class MAGNUM_EXPORT Buffer: public AbstractObject {
* @brief Alignment of shader storage buffer binding offset
*
* The result is cached, repeated queries don't result in repeated
* OpenGL calls. If extension @extension{ARB,shader_storage_buffer_object}
* is not available, returns `0`.
* OpenGL calls. If neither extension @extension{ARB,shader_storage_buffer_object}
* (part of OpenGL 4.3) nor OpenGL ES 3.1 is available, returns `0`.
* @see @fn_gl{Get} with @def_gl{SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT}
* @requires_gl Atomic counters are not available in OpenGL ES.
* @requires_gles30 Not defined in OpenGL ES 2.0
*/
static Int shaderStorageOffsetAlignment();
#endif
@ -489,7 +497,7 @@ class MAGNUM_EXPORT Buffer: public AbstractObject {
*
* The result is cached, repeated queries don't result in repeated
* OpenGL calls. If extension @extension{ARB,uniform_buffer_object}
* is not available, returns `0`.
* (part of OpenGL 3.1) is not available, returns `0`.
* @see @fn_gl{Get} with @def_gl{MAX_UNIFORM_BUFFER_BINDINGS}
* @requires_gles30 Uniform blocks are not available in OpenGL ES 2.0.
*/

18
src/Magnum/Implementation/BufferState.cpp
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@ -36,24 +36,22 @@ namespace Magnum { namespace Implementation {
const Buffer::Target BufferState::targetForIndex[] = {
Buffer::Target::Array,
Buffer::Target::ElementArray
Buffer::Target::ElementArray,
#ifndef MAGNUM_TARGET_GLES2
,
Buffer::Target::CopyRead,
Buffer::Target::CopyWrite,
Buffer::Target::PixelPack,
Buffer::Target::PixelUnpack,
Buffer::Target::TransformFeedback,
Buffer::Target::Uniform
#endif
#ifndef MAGNUM_TARGET_GLES
,
Buffer::Target::Uniform,
Buffer::Target::AtomicCounter,
Buffer::Target::DispatchIndirect,
Buffer::Target::DrawIndirect,
Buffer::Target::ShaderStorage,
#ifndef MAGNUM_TARGET_GLES
Buffer::Target::Texture
#endif
#endif
};
std::size_t BufferState::indexForTarget(Buffer::Target target) {
@ -67,14 +65,14 @@ std::size_t BufferState::indexForTarget(Buffer::Target target) {
case Buffer::Target::PixelUnpack: return 6;
case Buffer::Target::TransformFeedback: return 7;
case Buffer::Target::Uniform: return 8;
#endif
#ifndef MAGNUM_TARGET_GLES
case Buffer::Target::AtomicCounter: return 9;
case Buffer::Target::DispatchIndirect: return 10;
case Buffer::Target::DrawIndirect: return 11;
case Buffer::Target::ShaderStorage: return 12;
#ifndef MAGNUM_TARGET_GLES
case Buffer::Target::Texture: return 13;
#endif
#endif
}
CORRADE_ASSERT_UNREACHABLE();
@ -83,9 +81,9 @@ std::size_t BufferState::indexForTarget(Buffer::Target target) {
BufferState::BufferState(Context& context, std::vector<std::string>& extensions): bindings()
#ifndef MAGNUM_TARGET_GLES2
#ifndef MAGNUM_TARGET_GLES
, minMapAlignment(0), maxAtomicCounterBindings(0), maxShaderStorageBindings(0), shaderStorageOffsetAlignment(0)
, minMapAlignment(0)
#endif
, maxUniformBindings(0)
, maxAtomicCounterBindings(0), maxShaderStorageBindings(0), shaderStorageOffsetAlignment(0), maxUniformBindings(0)
#endif
{
#ifndef MAGNUM_TARGET_GLES

8
src/Magnum/Implementation/BufferState.h
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@ -32,13 +32,11 @@ namespace Magnum { namespace Implementation {
struct BufferState {
#ifndef MAGNUM_TARGET_GLES
static const std::size_t TargetCount = 13+1;
#else
#ifndef MAGNUM_TARGET_GLES2
static const std::size_t TargetCount = 8+1;
#elif !defined(MAGNUM_TARGET_GLES2)
static const std::size_t TargetCount = 12+1;
#else
static const std::size_t TargetCount = 2+1;
#endif
#endif
/* Target <-> index mapping */
static std::size_t indexForTarget(Buffer::Target target);
@ -72,10 +70,10 @@ struct BufferState {
GLint
#ifndef MAGNUM_TARGET_GLES
minMapAlignment,
#endif
maxAtomicCounterBindings,
maxShaderStorageBindings,
shaderStorageOffsetAlignment,
#endif
maxUniformBindings;
#endif
};

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