[Mesa-dev] [PATCH 06/24] mesa: implement SPIR-V loading in glShaderBinary
Ian Romanick
idr at freedesktop.org
Mon Nov 27 22:34:54 UTC 2017
On 11/15/2017 05:22 AM, Eduardo Lima Mitev wrote:
> From: Nicolai Hähnle <nicolai.haehnle at amd.com>
>
> v2: Add a gl_shader_spirv_data member to gl_shader, which already
> encapsulates a gl_spirv_module where the binary will be saved.
> (Eduardo Lima)
> ---
> src/mesa/main/glspirv.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++
> src/mesa/main/glspirv.h | 5 +++++
> src/mesa/main/mtypes.h | 4 ++++
> src/mesa/main/shaderapi.c | 41 ++++++++++++++++++++++++++++++++++---
> src/mesa/main/shaderobj.c | 2 ++
> 5 files changed, 101 insertions(+), 3 deletions(-)
>
> diff --git a/src/mesa/main/glspirv.c b/src/mesa/main/glspirv.c
> index d4724ad245c..390fa9e6984 100644
> --- a/src/mesa/main/glspirv.c
> +++ b/src/mesa/main/glspirv.c
> @@ -23,6 +23,8 @@
>
> #include "glspirv.h"
>
> +#include "errors.h"
> +
> #include "util/u_atomic.h"
>
> void
> @@ -61,6 +63,56 @@ _mesa_shader_spirv_data_reference(struct gl_shader_spirv_data **dest,
> p_atomic_inc(&src->RefCount);
> }
>
> +void
> +_mesa_spirv_shader_binary(struct gl_context *ctx,
> + GLint n, struct gl_shader **shaders,
> + const void* binary, GLint length)
Since _mesa_ShaderBinary will already check length < 0, make length
size_t. You can also make n be unsigned or plain int.
> +{
> + struct gl_spirv_module *module;
> + struct gl_shader_spirv_data *spirv_data;
> +
> + if (!ctx->Extensions.ARB_gl_spirv) {
> + _mesa_error(ctx, GL_INVALID_OPERATION, "glShaderBinary(SPIR-V)");
> + return;
> + }
I think this error should get moved to _mesa_ShaderBinary with the rest
of the API error checks.
> +
> + if (n <= 0)
> + return;
_mesa_ShaderBinary already checks n < 0. Maybe just elide the call to
_mesa_spirv_shader_binary if n == 0?
> +
> + assert(length >= 0);
> +
> + module = malloc(sizeof(*module) + (size_t)length);
> + if (!module) {
> + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glShaderBinary");
> + return;
> + }
> +
> + p_atomic_set(&module->RefCount, 0);
> + module->Length = length;
> + memcpy(&module->Binary[0], binary, length);
> +
> + for (int i = 0; i < n; ++i) {
> + struct gl_shader *sh = shaders[i];
> +
> + spirv_data = rzalloc(NULL, struct gl_shader_spirv_data);
> + _mesa_shader_spirv_data_reference(&sh->spirv_data, spirv_data);
> + _mesa_spirv_module_reference(&spirv_data->SpirVModule, module);
> +
> + sh->SpirVBinary = GL_TRUE;
It didn't occur to me while reviewing the earlier patch, but if
SpirVBinary is never visible to the API, we should use bool, true, and
false instead of the GL types.
> + sh->CompileStatus = compile_failure;
> +
> + free((void *)sh->Source);
> + sh->Source = NULL;
> + free((void *)sh->FallbackSource);
> + sh->FallbackSource = NULL;
> +
> + ralloc_free(sh->ir);
> + sh->ir = NULL;
> + ralloc_free(sh->symbols);
> + sh->symbols = NULL;
> + }
> +}
> +
> void GLAPIENTRY
> _mesa_SpecializeShaderARB(GLuint shader,
> const GLchar *pEntryPoint,
> diff --git a/src/mesa/main/glspirv.h b/src/mesa/main/glspirv.h
> index b8a0125ea9f..5ffaa230629 100644
> --- a/src/mesa/main/glspirv.h
> +++ b/src/mesa/main/glspirv.h
> @@ -71,6 +71,11 @@ void
> _mesa_shader_spirv_data_reference(struct gl_shader_spirv_data **dest,
> struct gl_shader_spirv_data *src);
>
> +void
> +_mesa_spirv_shader_binary(struct gl_context *ctx,
> + GLint n, struct gl_shader **shaders,
> + const void* binary, GLint length);
> +
> /**
> * \name API functions
> */
> diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
> index cfc763f043e..f19477eb027 100644
> --- a/src/mesa/main/mtypes.h
> +++ b/src/mesa/main/mtypes.h
> @@ -88,6 +88,7 @@ struct st_context;
> struct gl_uniform_storage;
> struct prog_instruction;
> struct gl_program_parameter_list;
> +struct gl_shader_spirv_data;
> struct set;
> struct set_entry;
> struct vbo_context;
> @@ -2637,6 +2638,9 @@ struct gl_shader
> GLuint TransformFeedbackBufferStride[MAX_FEEDBACK_BUFFERS];
>
> struct gl_shader_info info;
> +
> + /* ARB_gl_spirv related data */
> + struct gl_shader_spirv_data *spirv_data;
> };
>
>
> diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c
> index 9090bee9fb0..240d9fe6cbc 100644
> --- a/src/mesa/main/shaderapi.c
> +++ b/src/mesa/main/shaderapi.c
> @@ -42,6 +42,7 @@
> #include "main/context.h"
> #include "main/dispatch.h"
> #include "main/enums.h"
> +#include "main/glspirv.h"
> #include "main/hash.h"
> #include "main/mtypes.h"
> #include "main/pipelineobj.h"
> @@ -1054,6 +1055,17 @@ set_shader_source(struct gl_shader *sh, const GLchar *source)
> {
> assert(sh);
>
> + /* The GL_ARB_gl_spirv spec adds the following to the end of the description
> + * of ShaderSource:
> + *
> + * "If <shader> was previously associated with a SPIR-V module (via the
> + * ShaderBinary command), that association is broken. Upon successful
> + * completion of this command the SPIR_V_BINARY_ARB state of <shader>
> + * is set to FALSE."
> + */
> + _mesa_shader_spirv_data_reference(&sh->spirv_data, NULL);
> + sh->SpirVBinary = GL_FALSE;
> +
> if (sh->CompileStatus == compile_skipped && !sh->FallbackSource) {
> /* If shader was previously compiled back-up the source in case of cache
> * fallback.
> @@ -2147,9 +2159,7 @@ _mesa_ShaderBinary(GLint n, const GLuint* shaders, GLenum binaryformat,
> const void* binary, GLint length)
> {
> GET_CURRENT_CONTEXT(ctx);
> - (void) shaders;
> - (void) binaryformat;
> - (void) binary;
> + struct gl_shader **sh;
>
> /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
> * page 88 of the OpenGL 4.5 specs state:
> @@ -2163,6 +2173,31 @@ _mesa_ShaderBinary(GLint n, const GLuint* shaders, GLenum binaryformat,
> return;
> }
>
> + /* Get all shader objects at once so we can make the operation
> + * all-or-nothing.
> + */
> + if (n > SIZE_MAX / sizeof(*sh)) {
> + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glShaderBinary(count)");
> + return;
> + }
> +
> + sh = alloca(sizeof(*sh) * (size_t)n);
> + if (!sh) {
> + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glShaderBinary");
> + return;
> + }
> +
> + for (int i = 0; i < n; ++i) {
> + sh[i] = _mesa_lookup_shader_err(ctx, shaders[i], "glShaderBinary");
> + if (!sh[i])
> + return;
> + }
> +
> + if (binaryformat == GL_SHADER_BINARY_FORMAT_SPIR_V_ARB) {
> + _mesa_spirv_shader_binary(ctx, n, sh, binary, length);
> + return;
> + }
> +
> _mesa_error(ctx, GL_INVALID_ENUM, "glShaderBinary(format)");
> }
>
> diff --git a/src/mesa/main/shaderobj.c b/src/mesa/main/shaderobj.c
> index ce2e3df4fae..5c1cdd6b27a 100644
> --- a/src/mesa/main/shaderobj.c
> +++ b/src/mesa/main/shaderobj.c
> @@ -33,6 +33,7 @@
> #include "compiler/glsl/string_to_uint_map.h"
> #include "main/glheader.h"
> #include "main/context.h"
> +#include "main/glspirv.h"
> #include "main/hash.h"
> #include "main/mtypes.h"
> #include "main/shaderapi.h"
> @@ -121,6 +122,7 @@ _mesa_new_shader(GLuint name, gl_shader_stage stage)
> void
> _mesa_delete_shader(struct gl_context *ctx, struct gl_shader *sh)
> {
> + _mesa_shader_spirv_data_reference(&sh->spirv_data, NULL);
> free((void *)sh->Source);
> free((void *)sh->FallbackSource);
> free(sh->Label);
>
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