[Mesa-dev] [PATCH v2 9/9] st/mesa: enable GL image extensions when backend supports them
Ilia Mirkin
imirkin at alum.mit.edu
Sun Feb 14 00:22:40 UTC 2016
This enables ARB_shader_image_load_store and ARB_shader_image_size when
the backend claims support for these. It will also implicitly enable the
image component of ARB_shader_texture_image_samples.
Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Reviewed-by: Marek Olšák <marek.olsak at amd.com>
Reviewed-by: Dave Airlie <airlied at redhat.com>
---
src/mesa/state_tracker/st_extensions.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index bdfbded..57eeed6 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -226,6 +226,9 @@ void st_init_limits(struct pipe_screen *screen,
screen, sh, PIPE_SHADER_CAP_MAX_SHADER_BUFFERS) / 2;
pc->MaxShaderStorageBlocks = pc->MaxAtomicBuffers;
+ pc->MaxImageUniforms = screen->get_shader_param(
+ screen, sh, PIPE_SHADER_CAP_MAX_SHADER_IMAGES);
+
/* Gallium doesn't really care about local vs. env parameters so use the
* same limits.
*/
@@ -371,6 +374,20 @@ void st_init_limits(struct pipe_screen *screen,
c->MaxShaderStorageBlockSize = 1 << 27;
extensions->ARB_shader_storage_buffer_object = GL_TRUE;
}
+
+ c->MaxCombinedImageUniforms =
+ c->Program[MESA_SHADER_VERTEX].MaxImageUniforms +
+ c->Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms +
+ c->Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms +
+ c->Program[MESA_SHADER_GEOMETRY].MaxImageUniforms +
+ c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms +
+ c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
+ c->MaxImageUnits = MAX_IMAGE_UNITS;
+ c->MaxImageSamples = 0; /* XXX */
+ if (c->MaxCombinedImageUniforms) {
+ extensions->ARB_shader_image_load_store = GL_TRUE;
+ extensions->ARB_shader_image_size = GL_TRUE;
+ }
}
--
2.4.10
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