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mesa: add OES_texture_buffer and EXT_texture_buffer support

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Allow ES 3.1 contexts to access the texture buffer functionality.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Ilia Mirkin
2016-02-27 16:16:28 -05:00
parent 720670a615
commit b4c0c514b1
10 changed files with 94 additions and 47 deletions
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2
docs/GL3.txt
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@@ -269,7 +269,7 @@ GLES3.2, GLSL ES 3.2
GL_OES_shader_multisample_interpolation not started (based on parts of GL_ARB_gpu_shader5, which is done)
GL_OES_tessellation_shader not started (based on GL_ARB_tessellation_shader, which is done for some drivers)
GL_OES_texture_border_clamp DONE (all drivers)
GL_OES_texture_buffer not started (based on GL_ARB_texture_buffer_object, GL_ARB_texture_buffer_range, and GL_ARB_texture_buffer_object_rgb32 that are all done)
GL_OES_texture_buffer DONE (core only)
GL_OES_texture_cube_map_array not started (based on GL_ARB_texture_cube_map_array, which is done for all drivers)
GL_OES_texture_stencil8 DONE (all drivers that support GL_ARB_texture_stencil8)
GL_OES_texture_storage_multisample_2d_array DONE (all drivers that support GL_ARB_texture_multisample)

4
src/mapi/glapi/gen/apiexec.py
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@@ -68,7 +68,7 @@ class exec_info():
functions = {
# OpenGL 3.1 / GL_ARB_texture_buffer_object. Mesa only exposes this
# extension with core profile.
"TexBuffer": exec_info(core=31),
"TexBuffer": exec_info(core=31, es2=31),
# OpenGL 3.2 / GL_OES_geometry_shader.
"FramebufferTexture": exec_info(core=32, es2=31),
@@ -146,7 +146,7 @@ functions = {
# OpenGL 4.3 / GL_ARB_texture_buffer_range. Mesa can expose the extension
# with OpenGL 3.1.
"TexBufferRange": exec_info(core=31),
"TexBufferRange": exec_info(core=31, es2=31),
# OpenGL 4.3 / GL_ARB_framebuffer_no_attachments. Mesa can expose the
# extension with OpenGL 3.0.

36
src/mapi/glapi/gen/es_EXT.xml
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@@ -847,6 +847,24 @@
</category>
<category name="GL_EXT_texture_buffer" number="183">
<function name="TexBufferEXT" es2="3.1" alias="TexBuffer">
<param name="target" type="GLenum"/>
<param name="internalFormat" type="GLenum"/>
<param name="buffer" type="GLuint"/>
</function>
<function name="TexBufferRangeEXT" es2="3.1" alias="TexBufferRange">
<param name="target" type="GLenum"/>
<param name="internalformat" type="GLenum"/>
<param name="buffer" type="GLuint"/>
<param name="offset" type="GLintptr"/>
<param name="size" type="GLsizeiptr"/>
</function>
</category>
<category name="GL_EXT_draw_elements_base_vertex" number="204">
<function name="DrawElementsBaseVertexEXT" alias="DrawElementsBaseVertex"
@@ -891,6 +909,24 @@
</category>
<category name="GL_OES_texture_buffer" number="216">
<function name="TexBufferOES" es2="3.1" alias="TexBuffer">
<param name="target" type="GLenum"/>
<param name="internalFormat" type="GLenum"/>
<param name="buffer" type="GLuint"/>
</function>
<function name="TexBufferRangeOES" es2="3.1" alias="TexBufferRange">
<param name="target" type="GLenum"/>
<param name="internalformat" type="GLenum"/>
<param name="buffer" type="GLuint"/>
<param name="offset" type="GLintptr"/>
<param name="size" type="GLsizeiptr"/>
</function>
</category>
<category name="GL_OES_draw_elements_base_vertex" number="219">
<function name="DrawElementsBaseVertexOES" alias="DrawElementsBaseVertex"

4
src/mesa/main/bufferobj.c
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@@ -148,8 +148,8 @@ get_buffer_target(struct gl_context *ctx, GLenum target)
}
break;
case GL_TEXTURE_BUFFER:
if (ctx->API == API_OPENGL_CORE &&
ctx->Extensions.ARB_texture_buffer_object) {
if (_mesa_has_ARB_texture_buffer_object(ctx) ||
_mesa_has_OES_texture_buffer(ctx)) {
return &ctx->Texture.BufferObject;
}
break;

4
src/mesa/main/get.c
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@@ -1907,8 +1907,8 @@ tex_binding_to_index(const struct gl_context *ctx, GLenum binding)
|| _mesa_is_gles3(ctx)
? TEXTURE_2D_ARRAY_INDEX : -1;
case GL_TEXTURE_BINDING_BUFFER:
return ctx->API == API_OPENGL_CORE &&
ctx->Extensions.ARB_texture_buffer_object ?
return (_mesa_has_ARB_texture_buffer_object(ctx) ||
_mesa_has_OES_texture_buffer(ctx)) ?
TEXTURE_BUFFER_INDEX : -1;
case GL_TEXTURE_BINDING_CUBE_MAP_ARRAY:
return _mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_cube_map_array

20
src/mesa/main/get_hash_params.py
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@@ -535,6 +535,16 @@ descriptor=[
# GL_ARB_gpu_shader5 / GL_OES_geometry_shader
[ "MAX_GEOMETRY_SHADER_INVOCATIONS", "CONST(MAX_GEOMETRY_SHADER_INVOCATIONS), extra_ARB_gpu_shader5_or_oes_geometry_shader" ],
# GL_ARB_texture_buffer_object / GL_OES_texture_buffer
[ "MAX_TEXTURE_BUFFER_SIZE_ARB", "CONTEXT_INT(Const.MaxTextureBufferSize), extra_texture_buffer_object" ],
[ "TEXTURE_BINDING_BUFFER_ARB", "LOC_CUSTOM, TYPE_INT, 0, extra_texture_buffer_object" ],
[ "TEXTURE_BUFFER_DATA_STORE_BINDING_ARB", "LOC_CUSTOM, TYPE_INT, TEXTURE_BUFFER_INDEX, extra_texture_buffer_object" ],
[ "TEXTURE_BUFFER_FORMAT_ARB", "LOC_CUSTOM, TYPE_INT, 0, extra_texture_buffer_object" ],
[ "TEXTURE_BUFFER_ARB", "LOC_CUSTOM, TYPE_INT, 0, extra_texture_buffer_object" ],
# GL_ARB_texture_buffer_range
[ "TEXTURE_BUFFER_OFFSET_ALIGNMENT", "CONTEXT_INT(Const.TextureBufferOffsetAlignment), extra_ARB_texture_buffer_range" ],
]},
# Remaining enums are only in OpenGL
@@ -805,13 +815,6 @@ descriptor=[
# GL_ARB_color_buffer_float
[ "RGBA_FLOAT_MODE_ARB", "BUFFER_FIELD(Visual.floatMode, TYPE_BOOLEAN), extra_core_ARB_color_buffer_float_and_new_buffers" ],
# GL_ARB_texture_buffer_object
[ "MAX_TEXTURE_BUFFER_SIZE_ARB", "CONTEXT_INT(Const.MaxTextureBufferSize), extra_texture_buffer_object" ],
[ "TEXTURE_BINDING_BUFFER_ARB", "LOC_CUSTOM, TYPE_INT, 0, extra_texture_buffer_object" ],
[ "TEXTURE_BUFFER_DATA_STORE_BINDING_ARB", "LOC_CUSTOM, TYPE_INT, TEXTURE_BUFFER_INDEX, extra_texture_buffer_object" ],
[ "TEXTURE_BUFFER_FORMAT_ARB", "LOC_CUSTOM, TYPE_INT, 0, extra_texture_buffer_object" ],
[ "TEXTURE_BUFFER_ARB", "LOC_CUSTOM, TYPE_INT, 0, extra_texture_buffer_object" ],
# GL 3.0
[ "CONTEXT_FLAGS", "CONTEXT_INT(Const.ContextFlags), extra_version_30" ],
@@ -871,9 +874,6 @@ descriptor=[
# Enums restricted to OpenGL Core profile
{ "apis": ["GL_CORE"], "params": [
# GL_ARB_texture_buffer_range
[ "TEXTURE_BUFFER_OFFSET_ALIGNMENT", "CONTEXT_INT(Const.TextureBufferOffsetAlignment), extra_ARB_texture_buffer_range" ],
# GL_ARB_viewport_array
[ "MAX_VIEWPORTS", "CONTEXT_INT(Const.MaxViewports), extra_ARB_viewport_array" ],
[ "VIEWPORT_SUBPIXEL_BITS", "CONTEXT_INT(Const.ViewportSubpixelBits), extra_ARB_viewport_array" ],

4
src/mesa/main/tests/dispatch_sanity.cpp
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@@ -2450,6 +2450,10 @@ const struct function gles3_functions_possible[] = {
{ "glGetSamplerParameterIivOES", 30, -1 },
{ "glGetSamplerParameterIuivOES", 30, -1 },
/* GL_OES_texture_buffer */
{ "glTexBufferOES", 31, -1 },
{ "glTexBufferRangeOES", 31, -1 },
{ NULL, 0, -1 }
};

20
src/mesa/main/teximage.c
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@@ -499,8 +499,8 @@ _mesa_max_texture_levels(struct gl_context *ctx, GLenum target)
return ctx->Extensions.ARB_texture_cube_map_array
? ctx->Const.MaxCubeTextureLevels : 0;
case GL_TEXTURE_BUFFER:
return ctx->API == API_OPENGL_CORE &&
ctx->Extensions.ARB_texture_buffer_object ? 1 : 0;
return (_mesa_has_ARB_texture_buffer_object(ctx) ||
_mesa_has_OES_texture_buffer(ctx)) ? 1 : 0;
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
@@ -4717,7 +4717,7 @@ _mesa_CompressedTextureSubImage3D(GLuint texture, GLint level, GLint xoffset,
static mesa_format
get_texbuffer_format(const struct gl_context *ctx, GLenum internalFormat)
{
if (ctx->API != API_OPENGL_CORE) {
if (ctx->API == API_OPENGL_COMPAT) {
switch (internalFormat) {
case GL_ALPHA8:
return MESA_FORMAT_A_UNORM8;
@@ -4804,8 +4804,8 @@ get_texbuffer_format(const struct gl_context *ctx, GLenum internalFormat)
}
}
if (ctx->API == API_OPENGL_CORE &&
ctx->Extensions.ARB_texture_buffer_object_rgb32) {
if (_mesa_has_ARB_texture_buffer_object_rgb32(ctx) ||
_mesa_has_OES_texture_buffer(ctx)) {
switch (internalFormat) {
case GL_RGB32F:
return MESA_FORMAT_RGB_FLOAT32;
@@ -4822,6 +4822,8 @@ get_texbuffer_format(const struct gl_context *ctx, GLenum internalFormat)
case GL_RGBA8:
return MESA_FORMAT_R8G8B8A8_UNORM;
case GL_RGBA16:
if (_mesa_is_gles(ctx))
return MESA_FORMAT_NONE;
return MESA_FORMAT_RGBA_UNORM16;
case GL_RGBA16F_ARB:
return MESA_FORMAT_RGBA_FLOAT16;
@@ -4843,6 +4845,8 @@ get_texbuffer_format(const struct gl_context *ctx, GLenum internalFormat)
case GL_RG8:
return MESA_FORMAT_R8G8_UNORM;
case GL_RG16:
if (_mesa_is_gles(ctx))
return MESA_FORMAT_NONE;
return MESA_FORMAT_R16G16_UNORM;
case GL_RG16F:
return MESA_FORMAT_RG_FLOAT16;
@@ -4864,6 +4868,8 @@ get_texbuffer_format(const struct gl_context *ctx, GLenum internalFormat)
case GL_R8:
return MESA_FORMAT_R_UNORM8;
case GL_R16:
if (_mesa_is_gles(ctx))
return MESA_FORMAT_NONE;
return MESA_FORMAT_R_UNORM16;
case GL_R16F:
return MESA_FORMAT_R_FLOAT16;
@@ -4941,8 +4947,8 @@ _mesa_texture_buffer_range(struct gl_context *ctx,
/* NOTE: ARB_texture_buffer_object has interactions with
* the compatibility profile that are not implemented.
*/
if (!(ctx->API == API_OPENGL_CORE &&
ctx->Extensions.ARB_texture_buffer_object)) {
if (!_mesa_has_ARB_texture_buffer_object(ctx) &&
!_mesa_has_OES_texture_buffer(ctx)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(ARB_texture_buffer_object is not"
" implemented for the compatibility profile)", caller);

8
src/mesa/main/texobj.c
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@@ -204,8 +204,8 @@ _mesa_get_current_tex_object(struct gl_context *ctx, GLenum target)
case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_2D_ARRAY_INDEX] : NULL;
case GL_TEXTURE_BUFFER:
return ctx->API == API_OPENGL_CORE &&
ctx->Extensions.ARB_texture_buffer_object ?
return (_mesa_has_ARB_texture_buffer_object(ctx) ||
_mesa_has_OES_texture_buffer(ctx)) ?
texUnit->CurrentTex[TEXTURE_BUFFER_INDEX] : NULL;
case GL_TEXTURE_EXTERNAL_OES:
return _mesa_is_gles(ctx) && ctx->Extensions.OES_EGL_image_external
@@ -1574,8 +1574,8 @@ _mesa_tex_target_to_index(const struct gl_context *ctx, GLenum target)
|| _mesa_is_gles3(ctx)
? TEXTURE_2D_ARRAY_INDEX : -1;
case GL_TEXTURE_BUFFER:
return ctx->API == API_OPENGL_CORE &&
ctx->Extensions.ARB_texture_buffer_object ?
return (_mesa_has_ARB_texture_buffer_object(ctx) ||
_mesa_has_OES_texture_buffer(ctx)) ?
TEXTURE_BUFFER_INDEX : -1;
case GL_TEXTURE_EXTERNAL_OES:
return _mesa_is_gles(ctx) && ctx->Extensions.OES_EGL_image_external

39
src/mesa/main/texparam.c
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@@ -1223,6 +1223,26 @@ _mesa_legal_get_tex_level_parameter_target(struct gl_context *ctx, GLenum target
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
return ctx->Extensions.ARB_texture_multisample;
case GL_TEXTURE_BUFFER:
/* GetTexLevelParameter accepts GL_TEXTURE_BUFFER in GL 3.1+ contexts,
* but not in earlier versions that expose ARB_texture_buffer_object.
*
* From the ARB_texture_buffer_object spec:
* "(7) Do buffer textures support texture parameters (TexParameter) or
* queries (GetTexParameter, GetTexLevelParameter, GetTexImage)?
*
* RESOLVED: No. [...] Note that the spec edits above don't add
* explicit error language for any of these cases. That is because
* each of the functions enumerate the set of valid <target>
* parameters. Not editing the spec to allow TEXTURE_BUFFER_ARB in
* these cases means that target is not legal, and an INVALID_ENUM
* error should be generated."
*
* From the OpenGL 3.1 spec:
* "target may also be TEXTURE_BUFFER, indicating the texture buffer."
*/
return (ctx->API == API_OPENGL_CORE && ctx->Version >= 31) ||
_mesa_has_OES_texture_buffer(ctx);
}
if (!_mesa_is_desktop_gl(ctx))
@@ -1247,25 +1267,6 @@ _mesa_legal_get_tex_level_parameter_target(struct gl_context *ctx, GLenum target
case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
return ctx->Extensions.EXT_texture_array;
case GL_TEXTURE_BUFFER:
/* GetTexLevelParameter accepts GL_TEXTURE_BUFFER in GL 3.1+ contexts,
* but not in earlier versions that expose ARB_texture_buffer_object.
*
* From the ARB_texture_buffer_object spec:
* "(7) Do buffer textures support texture parameters (TexParameter) or
* queries (GetTexParameter, GetTexLevelParameter, GetTexImage)?
*
* RESOLVED: No. [...] Note that the spec edits above don't add
* explicit error language for any of these cases. That is because
* each of the functions enumerate the set of valid <target>
* parameters. Not editing the spec to allow TEXTURE_BUFFER_ARB in
* these cases means that target is not legal, and an INVALID_ENUM
* error should be generated."
*
* From the OpenGL 3.1 spec:
* "target may also be TEXTURE_BUFFER, indicating the texture buffer."
*/
return ctx->API == API_OPENGL_CORE && ctx->Version >= 31;
case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
return ctx->Extensions.ARB_texture_multisample;