diff options
| -rw-r--r-- | src/glsl/builtin_variables.cpp | 18 | ||||
| -rw-r--r-- | src/mesa/main/mtypes.h | 10 | ||||
| -rw-r--r-- | src/mesa/program/prog_print.c | 1 |
3 files changed, 28 insertions, 1 deletions
diff --git a/src/glsl/builtin_variables.cpp b/src/glsl/builtin_variables.cpp index 7a3505ace12..4d441045a83 100644 --- a/src/glsl/builtin_variables.cpp +++ b/src/glsl/builtin_variables.cpp @@ -30,6 +30,9 @@ #include "program/prog_statevars.h" #include "program/prog_instruction.h" +static struct gl_builtin_uniform_element gl_NumSamples_elements[] = { + {NULL, {STATE_NUM_SAMPLES, 0, 0}, SWIZZLE_XXXX} +}; static struct gl_builtin_uniform_element gl_DepthRange_elements[] = { {"near", {STATE_DEPTH_RANGE, 0, 0}, SWIZZLE_XXXX}, @@ -236,6 +239,7 @@ static struct gl_builtin_uniform_element gl_NormalMatrix_elements[] = { #define STATEVAR(name) {#name, name ## _elements, Elements(name ## _elements)} static const struct gl_builtin_uniform_desc _mesa_builtin_uniform_desc[] = { + STATEVAR(gl_NumSamples), STATEVAR(gl_DepthRange), STATEVAR(gl_ClipPlane), STATEVAR(gl_Point), @@ -662,6 +666,7 @@ builtin_variable_generator::generate_constants() void builtin_variable_generator::generate_uniforms() { + add_uniform(int_t, "gl_NumSamples"); add_uniform(type("gl_DepthRangeParameters"), "gl_DepthRange"); add_uniform(array(vec4_t, VERT_ATTRIB_MAX), "gl_CurrentAttribVertMESA"); add_uniform(array(vec4_t, VARYING_SLOT_MAX), "gl_CurrentAttribFragMESA"); @@ -838,6 +843,19 @@ builtin_variable_generator::generate_fs_special_vars() if (state->AMD_shader_stencil_export_warn) var->warn_extension = "GL_AMD_shader_stencil_export"; } + + if (state->ARB_sample_shading_enable) { + add_system_value(SYSTEM_VALUE_SAMPLE_ID, int_t, "gl_SampleID"); + add_system_value(SYSTEM_VALUE_SAMPLE_POS, vec2_t, "gl_SamplePosition"); + /* From the ARB_sample_shading specification: + * "The number of elements in the array is ceil(<s>/32), where + * <s> is the maximum number of color samples supported by the + * implementation." + * Since no drivers expose more than 32x MSAA, we can simply set + * the array size to 1 rather than computing it. + */ + add_output(FRAG_RESULT_SAMPLE_MASK, array(int_t, 1), "gl_SampleMask"); + } } diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h index 4774c8eb04c..b5c5583d6d3 100644 --- a/src/mesa/main/mtypes.h +++ b/src/mesa/main/mtypes.h @@ -274,6 +274,11 @@ typedef enum #define VARYING_BIT_VAR(V) BITFIELD64_BIT(VARYING_SLOT_VAR0 + (V)) /*@}*/ +/** + * Bitflags for system values. + */ +#define SYSTEM_BIT_SAMPLE_ID BITFIELD64_BIT(SYSTEM_VALUE_SAMPLE_ID) +#define SYSTEM_BIT_SAMPLE_POS BITFIELD64_BIT(SYSTEM_VALUE_SAMPLE_POS) /** * Determine if the given gl_varying_slot appears in the fragment shader. @@ -306,12 +311,13 @@ typedef enum * register is written. No FRAG_RESULT_DATAn will be written. */ FRAG_RESULT_COLOR = 2, + FRAG_RESULT_SAMPLE_MASK = 3, /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n] * or ARB_fragment_program fragment.color[n]) color results. If * any are written, FRAG_RESULT_COLOR will not be written. */ - FRAG_RESULT_DATA0 = 3, + FRAG_RESULT_DATA0 = 4, FRAG_RESULT_MAX = (FRAG_RESULT_DATA0 + MAX_DRAW_BUFFERS) } gl_frag_result; @@ -1904,6 +1910,8 @@ typedef enum SYSTEM_VALUE_FRONT_FACE, /**< Fragment shader only (not done yet) */ SYSTEM_VALUE_VERTEX_ID, /**< Vertex shader only */ SYSTEM_VALUE_INSTANCE_ID, /**< Vertex shader only */ + SYSTEM_VALUE_SAMPLE_ID, /**< Fragment shader only */ + SYSTEM_VALUE_SAMPLE_POS, /**< Fragment shader only */ SYSTEM_VALUE_MAX /**< Number of values */ } gl_system_value; diff --git a/src/mesa/program/prog_print.c b/src/mesa/program/prog_print.c index cf852132d04..fa9063f5b9d 100644 --- a/src/mesa/program/prog_print.c +++ b/src/mesa/program/prog_print.c @@ -311,6 +311,7 @@ arb_output_attrib_string(GLint index, GLenum progType) "result.depth", /* FRAG_RESULT_DEPTH */ "result.(one)", /* FRAG_RESULT_STENCIL */ "result.color", /* FRAG_RESULT_COLOR */ + "result.samplemask", /* FRAG_RESULT_SAMPLE_MASK */ "result.color[0]", /* FRAG_RESULT_DATA0 (named for GLSL's gl_FragData) */ "result.color[1]", "result.color[2]", |