diff options
| -rw-r--r-- | src/mesa/program/ir_to_mesa.cpp | 59 |
1 files changed, 45 insertions, 14 deletions
diff --git a/src/mesa/program/ir_to_mesa.cpp b/src/mesa/program/ir_to_mesa.cpp index 5c92bc9865d..be162e7a25a 100644 --- a/src/mesa/program/ir_to_mesa.cpp +++ b/src/mesa/program/ir_to_mesa.cpp @@ -26,8 +26,7 @@ /** * \file ir_to_mesa.cpp * - * Translates the IR to ARB_fragment_program text if possible, - * printing the result + * Translate GLSL IR to Mesa's gl_program representation. */ #include <stdio.h> @@ -288,19 +287,22 @@ ir_to_mesa_dst_reg ir_to_mesa_address_reg = { PROGRAM_ADDRESS, 0, WRITEMASK_X, COND_TR, NULL }; -static void fail_link(struct gl_shader_program *prog, const char *fmt, ...) PRINTFLIKE(2, 3); +static void +fail_link(struct gl_shader_program *prog, const char *fmt, ...) PRINTFLIKE(2, 3); -static void fail_link(struct gl_shader_program *prog, const char *fmt, ...) - { - va_list args; - va_start(args, fmt); - prog->InfoLog = talloc_vasprintf_append(prog->InfoLog, fmt, args); - va_end(args); +static void +fail_link(struct gl_shader_program *prog, const char *fmt, ...) +{ + va_list args; + va_start(args, fmt); + prog->InfoLog = talloc_vasprintf_append(prog->InfoLog, fmt, args); + va_end(args); - prog->LinkStatus = GL_FALSE; - } + prog->LinkStatus = GL_FALSE; +} -static int swizzle_for_size(int size) +static int +swizzle_for_size(int size) { int size_swizzles[4] = { MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_X, SWIZZLE_X, SWIZZLE_X), @@ -309,6 +311,7 @@ static int swizzle_for_size(int size) MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_W), }; + assert(size < 4); return size_swizzles[size - 1]; } @@ -2254,6 +2257,10 @@ set_uniform_initializers(GLcontext *ctx, talloc_free(mem_ctx); } + +/** + * Convert a shader's GLSL IR into a Mesa gl_program. + */ struct gl_program * get_mesa_program(GLcontext *ctx, struct gl_shader_program *shader_program, struct gl_shader *shader) @@ -2344,10 +2351,12 @@ get_mesa_program(GLcontext *ctx, struct gl_shader_program *shader_program, mesa_instruction_annotation = talloc_array(v.mem_ctx, ir_instruction *, num_instructions); + /* Convert ir_mesa_instructions into prog_instructions. + */ mesa_inst = mesa_instructions; i = 0; foreach_iter(exec_list_iterator, iter, v.instructions) { - ir_to_mesa_instruction *inst = (ir_to_mesa_instruction *)iter.get(); + const ir_to_mesa_instruction *inst = (ir_to_mesa_instruction *)iter.get(); mesa_inst->Opcode = inst->op; mesa_inst->CondUpdate = inst->cond_update; @@ -2368,6 +2377,7 @@ get_mesa_program(GLcontext *ctx, struct gl_shader_program *shader_program, if (mesa_inst->DstReg.RelAddr) prog->IndirectRegisterFiles |= 1 << mesa_inst->DstReg.File; + /* Update program's bitmask of indirectly accessed register files */ for (unsigned src = 0; src < 3; src++) if (mesa_inst->SrcReg[src].RelAddr) prog->IndirectRegisterFiles |= 1 << mesa_inst->SrcReg[src].File; @@ -2429,6 +2439,12 @@ get_mesa_program(GLcontext *ctx, struct gl_shader_program *shader_program, } extern "C" { + +/** + * Called via ctx->Driver.CompilerShader(). + * This is a no-op. + * XXX can we remove the ctx->Driver.CompileShader() hook? + */ GLboolean _mesa_ir_compile_shader(GLcontext *ctx, struct gl_shader *shader) { @@ -2438,6 +2454,13 @@ _mesa_ir_compile_shader(GLcontext *ctx, struct gl_shader *shader) return GL_TRUE; } + +/** + * Link a shader. + * Called via ctx->Driver.LinkShader() + * This actually involves converting GLSL IR into Mesa gl_programs with + * code lowering and other optimizations. + */ GLboolean _mesa_ir_link_shader(GLcontext *ctx, struct gl_shader_program *prog) { @@ -2446,7 +2469,7 @@ _mesa_ir_link_shader(GLcontext *ctx, struct gl_shader_program *prog) for (unsigned i = 0; i < prog->_NumLinkedShaders; i++) { bool progress; exec_list *ir = prog->_LinkedShaders[i]->ir; - struct gl_shader_compiler_options *options = + const struct gl_shader_compiler_options *options = &ctx->ShaderCompilerOptions[_mesa_shader_type_to_index(prog->_LinkedShaders[i]->Type)]; do { @@ -2516,6 +2539,10 @@ _mesa_ir_link_shader(GLcontext *ctx, struct gl_shader_program *prog) return GL_TRUE; } + +/** + * Compile a GLSL shader. Called via glCompileShader(). + */ void _mesa_glsl_compile_shader(GLcontext *ctx, struct gl_shader *shader) { @@ -2600,6 +2627,10 @@ _mesa_glsl_compile_shader(GLcontext *ctx, struct gl_shader *shader) } } + +/** + * Link a GLSL shader program. Called via glLinkProgram(). + */ void _mesa_glsl_link_shader(GLcontext *ctx, struct gl_shader_program *prog) { |