* \brief SPIRV-V extension handling. See ARB_spirv_extensions
*/
+#include <stdbool.h>
#include "spirv_extensions.h"
GLuint
_mesa_get_spirv_extension_count(struct gl_context *ctx)
{
- return 0;
+ if (ctx->Const.SpirVExtensions == NULL)
+ return 0;
+
+ return ctx->Const.SpirVExtensions->count;
}
const GLubyte *
_mesa_get_enabled_spirv_extension(struct gl_context *ctx,
GLuint index)
{
+ unsigned int n = 0;
+
+ if (ctx->Const.SpirVExtensions == NULL)
+ return (const GLubyte *) 0;
+
+ for (unsigned int i = 0; i < SPV_EXTENSIONS_COUNT; i++) {
+ if (ctx->Const.SpirVExtensions->supported[i]) {
+ if (n == index)
+ return (const GLubyte *) _mesa_spirv_extensions_to_string(i);
+ else
+ n++;
+ }
+ }
+
return (const GLubyte *) 0;
}
return "unknown";
}
+
+/**
+ * Sets the supported flags for known SPIR-V extensions based on the
+ * capabilites supported (spirv capabilities based on the spirv to nir
+ * support).
+ *
+ * One could argue that makes more sense in the other way around, as from the
+ * spec pov capabilities are enable for a given extension. But from our pov,
+ * we support or not (depending on the driver) some given capability, and
+ * spirv_to_nir check for capabilities not extensions. Also we usually fill
+ * first the supported capabilities, that are not always related to an
+ * extension.
+ */
+void
+_mesa_fill_supported_spirv_extensions(struct spirv_supported_extensions *ext,
+ const struct spirv_supported_capabilities *cap)
+{
+ memset(ext->supported, 0, sizeof(ext->supported));
+
+ ext->count = 0;
+
+ ext->supported[SPV_KHR_shader_draw_parameters] = cap->draw_parameters;
+ ext->supported[SPV_KHR_multiview] = cap->multiview;
+ ext->supported[SPV_KHR_storage_buffer_storage_class] = true;
+ ext->supported[SPV_KHR_variable_pointers] = cap->variable_pointers;
+ ext->supported[SPV_AMD_gcn_shader] = cap->amd_gcn_shader;
+ ext->supported[SPV_KHR_shader_ballot] = cap->subgroup_ballot;
+ ext->supported[SPV_KHR_subgroup_vote] = cap->subgroup_vote;
+
+ for (unsigned i = 0; i < SPV_EXTENSIONS_COUNT; i++) {
+ if (ext->supported[i])
+ ext->count++;
+ }
+}