diff options
Diffstat (limited to 'src/glsl/builtin_variables.cpp')
| -rw-r--r-- | src/glsl/builtin_variables.cpp | 193 |
1 files changed, 151 insertions, 42 deletions
diff --git a/src/glsl/builtin_variables.cpp b/src/glsl/builtin_variables.cpp index 353805b7ffe..e7769419f61 100644 --- a/src/glsl/builtin_variables.cpp +++ b/src/glsl/builtin_variables.cpp @@ -61,6 +61,17 @@ static const builtin_variable builtin_100ES_fs_variables[] = { { ir_var_in, FRAG_ATTRIB_PNTC, "vec2", "gl_PointCoord" }, }; +static const builtin_variable builtin_300ES_vs_variables[] = { + { ir_var_system_value, SYSTEM_VALUE_VERTEX_ID, "int", "gl_VertexID" }, +}; + +static const builtin_variable builtin_300ES_fs_variables[] = { + { ir_var_in, FRAG_ATTRIB_WPOS, "vec4", "gl_FragCoord" }, + { ir_var_in, FRAG_ATTRIB_FACE, "bool", "gl_FrontFacing" }, + { ir_var_out, FRAG_RESULT_DEPTH, "float", "gl_FragDepth" }, + { ir_var_in, FRAG_ATTRIB_PNTC, "vec2", "gl_PointCoord" }, +}; + static const builtin_variable builtin_110_fs_variables[] = { { ir_var_out, FRAG_RESULT_DEPTH, "float", "gl_FragDepth" }, }; @@ -499,12 +510,15 @@ add_builtin_constant(exec_list *instructions, glsl_symbol_table *symtab, return var; } -/* Several constants in GLSL ES have different names than normal desktop GLSL. +/** + * Uniforms that are common to all GLSL ES implementations. + * + * Several constants in GLSL ES have different names than normal desktop GLSL. * Therefore, this function should only be called on the ES path. */ static void -generate_100ES_uniforms(exec_list *instructions, - struct _mesa_glsl_parse_state *state) +generate_common_ES_uniforms(exec_list *instructions, + struct _mesa_glsl_parse_state *state) { glsl_symbol_table *const symtab = state->symbols; @@ -512,8 +526,6 @@ generate_100ES_uniforms(exec_list *instructions, state->Const.MaxVertexAttribs); add_builtin_constant(instructions, symtab, "gl_MaxVertexUniformVectors", state->Const.MaxVertexUniformComponents); - add_builtin_constant(instructions, symtab, "gl_MaxVaryingVectors", - state->Const.MaxVaryingFloats / 4); add_builtin_constant(instructions, symtab, "gl_MaxVertexTextureImageUnits", state->Const.MaxVertexTextureImageUnits); add_builtin_constant(instructions, symtab, "gl_MaxCombinedTextureImageUnits", @@ -528,6 +540,36 @@ generate_100ES_uniforms(exec_list *instructions, } static void +generate_100ES_uniforms(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + generate_common_ES_uniforms(instructions, state); + + glsl_symbol_table *const symtab = state->symbols; + + add_builtin_constant(instructions, symtab, "gl_MaxVaryingVectors", + state->Const.MaxVaryingFloats / 4); +} + +static void +generate_300ES_uniforms(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + generate_common_ES_uniforms(instructions, state); + + glsl_symbol_table *const symtab = state->symbols; + + add_builtin_constant(instructions, symtab, "gl_MaxVertexOutputVectors", + state->Const.MaxVaryingFloats / 4); + add_builtin_constant(instructions, symtab, "gl_MaxFragmentInputVectors", + state->Const.MaxVaryingFloats / 4); + add_builtin_constant(instructions, symtab, "gl_MinProgramTexelOffset", + state->Const.MinProgramTexelOffset); + add_builtin_constant(instructions, symtab, "gl_MaxProgramTexelOffset", + state->Const.MaxProgramTexelOffset); +} + +static void generate_110_uniforms(exec_list *instructions, struct _mesa_glsl_parse_state *state, bool add_deprecated) @@ -657,6 +699,26 @@ generate_100ES_vs_variables(exec_list *instructions, vertex_shader); } +static void +generate_300ES_vs_variables(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + for (unsigned i = 0; i < Elements(builtin_core_vs_variables); i++) { + add_builtin_variable(instructions, state->symbols, + & builtin_core_vs_variables[i]); + } + + for (unsigned i = 0; i < Elements(builtin_300ES_vs_variables); i++) { + add_builtin_variable(instructions, state->symbols, + & builtin_300ES_vs_variables[i]); + } + + generate_300ES_uniforms(instructions, state); + + generate_ARB_draw_buffers_variables(instructions, state, false, + vertex_shader); +} + static void generate_110_vs_variables(exec_list *instructions, @@ -760,23 +822,36 @@ static void initialize_vs_variables(exec_list *instructions, struct _mesa_glsl_parse_state *state) { - - switch (state->language_version) { - case 100: - generate_100ES_vs_variables(instructions, state); - break; - case 110: - generate_110_vs_variables(instructions, state, true); - break; - case 120: - generate_120_vs_variables(instructions, state, true); - break; - case 130: - generate_130_vs_variables(instructions, state, true); - break; - case 140: - generate_130_vs_variables(instructions, state, false); - break; + if (state->es_shader) { + switch (state->language_version) { + case 100: + generate_100ES_vs_variables(instructions, state); + break; + case 300: + generate_300ES_vs_variables(instructions, state); + break; + default: + assert(!"Unexpected language version"); + break; + } + } else { + switch (state->language_version) { + case 110: + generate_110_vs_variables(instructions, state, true); + break; + case 120: + generate_120_vs_variables(instructions, state, true); + break; + case 130: + generate_130_vs_variables(instructions, state, true); + break; + case 140: + generate_130_vs_variables(instructions, state, false); + break; + default: + assert(!"Unexpected language version"); + break; + } } generate_ARB_draw_instanced_variables(instructions, state, false, @@ -806,6 +881,25 @@ generate_100ES_fs_variables(exec_list *instructions, } static void +generate_300ES_fs_variables(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + /* Note: we don't add builtin_core_fs_variables, because it contains + * gl_FragColor, which is not in GLSL 3.00 ES. + */ + + for (unsigned i = 0; i < Elements(builtin_300ES_fs_variables); i++) { + add_builtin_variable(instructions, state->symbols, + & builtin_300ES_fs_variables[i]); + } + + generate_300ES_uniforms(instructions, state); + + generate_ARB_draw_buffers_variables(instructions, state, false, + fragment_shader); +} + +static void generate_110_fs_variables(exec_list *instructions, struct _mesa_glsl_parse_state *state, bool add_deprecated) @@ -865,8 +959,9 @@ generate_ARB_draw_buffers_variables(exec_list *instructions, mdb->warn_extension = "GL_ARB_draw_buffers"; /* gl_FragData is only available in the fragment shader. + * It is not present in GLSL 3.00 ES. */ - if (target == fragment_shader) { + if (target == fragment_shader && !state->is_version(0, 300)) { const glsl_type *const vec4_array_type = glsl_type::get_array_instance(glsl_type::vec4_type, state->Const.MaxDrawBuffers); @@ -903,7 +998,8 @@ generate_ARB_draw_instanced_variables(exec_list *instructions, inst->warn_extension = "GL_ARB_draw_instanced"; } - if (state->ARB_draw_instanced_enable || state->language_version >= 140) { + bool available_in_core = state->is_version(140, 300); + if (state->ARB_draw_instanced_enable || available_in_core) { /* Originally ARB_draw_instanced only specified that ARB decorated name. * Since no vendor actually implemented that behavior and some apps use * the undecorated name, the extension now specifies that both names are @@ -914,7 +1010,7 @@ generate_ARB_draw_instanced_variables(exec_list *instructions, "gl_InstanceID", glsl_type::int_type, ir_var_system_value, SYSTEM_VALUE_INSTANCE_ID); - if (state->language_version < 140 && warn) + if (!available_in_core && warn) inst->warn_extension = "GL_ARB_draw_instanced"; } } @@ -1016,23 +1112,36 @@ static void initialize_fs_variables(exec_list *instructions, struct _mesa_glsl_parse_state *state) { - - switch (state->language_version) { - case 100: - generate_100ES_fs_variables(instructions, state); - break; - case 110: - generate_110_fs_variables(instructions, state, true); - break; - case 120: - generate_120_fs_variables(instructions, state, true); - break; - case 130: - generate_130_fs_variables(instructions, state); - break; - case 140: - generate_140_fs_variables(instructions, state); - break; + if (state->es_shader) { + switch (state->language_version) { + case 100: + generate_100ES_fs_variables(instructions, state); + break; + case 300: + generate_300ES_fs_variables(instructions, state); + break; + default: + assert(!"Unexpected language version"); + break; + } + } else { + switch (state->language_version) { + case 110: + generate_110_fs_variables(instructions, state, true); + break; + case 120: + generate_120_fs_variables(instructions, state, true); + break; + case 130: + generate_130_fs_variables(instructions, state); + break; + case 140: + generate_140_fs_variables(instructions, state); + break; + default: + assert(!"Unexpected language version"); + break; + } } if (state->ARB_shader_stencil_export_enable) |