Mesa (master): mesa: refuse to compile SPIR-V shaders or link mixed shaders
Eduardo Lima Mitev
elima at kemper.freedesktop.org
Tue Dec 12 13:05:44 UTC 2017
Module: Mesa
Branch: master
Commit: accb7d439094ce284b139a5e87930b489702f8eb
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=accb7d439094ce284b139a5e87930b489702f8eb
Author: Nicolai Hähnle <nicolai.haehnle at amd.com>
Date: Sat Jun 10 19:57:18 2017 +0200
mesa: refuse to compile SPIR-V shaders or link mixed shaders
Note that gl_shader::CompileStatus will also indicate whether a shader
has been successfully specialized.
v2: Use the 'spirv_data' member of gl_shader to know if it is a SPIR-V
shader, instead of a dedicated flag. (Timothy Arceri)
v3: Use bool instead of GLboolean. (Ian Romanick)
Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>
---
src/mesa/main/shaderapi.c | 12 ++++++++++++
src/mesa/program/ir_to_mesa.cpp | 17 ++++++++++++++++-
2 files changed, 28 insertions(+), 1 deletion(-)
diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c
index 0f65cb0a96..d824a88ca2 100644
--- a/src/mesa/main/shaderapi.c
+++ b/src/mesa/main/shaderapi.c
@@ -1097,6 +1097,18 @@ _mesa_compile_shader(struct gl_context *ctx, struct gl_shader *sh)
if (!sh)
return;
+ /* The GL_ARB_gl_spirv spec says:
+ *
+ * "Add a new error for the CompileShader command:
+ *
+ * An INVALID_OPERATION error is generated if the SPIR_V_BINARY_ARB
+ * state of <shader> is TRUE."
+ */
+ if (sh->spirv_data) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glCompileShader(SPIR-V)");
+ return;
+ }
+
if (!sh->Source) {
/* If the user called glCompileShader without first calling
* glShaderSource, we should fail to compile, but not raise a GL_ERROR.
diff --git a/src/mesa/program/ir_to_mesa.cpp b/src/mesa/program/ir_to_mesa.cpp
index ea74539cd7..5f663b3d09 100644
--- a/src/mesa/program/ir_to_mesa.cpp
+++ b/src/mesa/program/ir_to_mesa.cpp
@@ -3083,6 +3083,7 @@ void
_mesa_glsl_link_shader(struct gl_context *ctx, struct gl_shader_program *prog)
{
unsigned int i;
+ bool spirv;
_mesa_clear_shader_program_data(ctx, prog);
@@ -3092,7 +3093,21 @@ _mesa_glsl_link_shader(struct gl_context *ctx, struct gl_shader_program *prog)
for (i = 0; i < prog->NumShaders; i++) {
if (!prog->Shaders[i]->CompileStatus) {
- linker_error(prog, "linking with uncompiled shader");
+ linker_error(prog, "linking with uncompiled/unspecialized shader");
+ }
+
+ if (!i) {
+ spirv = (prog->Shaders[i]->spirv_data != NULL);
+ } else if (spirv && !prog->Shaders[i]->spirv_data) {
+ /* The GL_ARB_gl_spirv spec adds a new bullet point to the list of
+ * reasons LinkProgram can fail:
+ *
+ * "All the shader objects attached to <program> do not have the
+ * same value for the SPIR_V_BINARY_ARB state."
+ */
+ linker_error(prog,
+ "not all attached shaders have the same "
+ "SPIR_V_BINARY_ARB state");
}
}
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