[Mesa-dev] [PATCH v2 75/82] main: Add SHADER_STORAGE_BLOCK and BUFFER_VARIABLE support for ARB_program_interface_query
Iago Toral Quiroga
itoral at igalia.com
Wed Jun 3 00:02:05 PDT 2015
From: Samuel Iglesias Gonsalvez <siglesias at igalia.com>
Including TOP_LEVEL_ARRAY_SIZE and TOP_LEVEL_ARRAY_STRIDE queries.
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias at igalia.com>
---
src/glsl/ir_uniform.h | 5 +
src/glsl/link_uniforms.cpp | 16 ++-
src/glsl/linker.cpp | 10 +-
src/mesa/main/program_resource.c | 7 +-
src/mesa/main/shader_query.cpp | 265 +++++++++++++++++++++++++++++++++++++--
5 files changed, 288 insertions(+), 15 deletions(-)
diff --git a/src/glsl/ir_uniform.h b/src/glsl/ir_uniform.h
index 21b5d05..c2bd2c7 100644
--- a/src/glsl/ir_uniform.h
+++ b/src/glsl/ir_uniform.h
@@ -181,6 +181,11 @@ struct gl_uniform_storage {
* via the API.
*/
bool hidden;
+
+ /**
+ * This is a shader storage buffer variable, not an uniform.
+ */
+ bool is_shader_storage;
};
#ifdef __cplusplus
diff --git a/src/glsl/link_uniforms.cpp b/src/glsl/link_uniforms.cpp
index b4b1181..d5e0756 100644
--- a/src/glsl/link_uniforms.cpp
+++ b/src/glsl/link_uniforms.cpp
@@ -632,6 +632,8 @@ private:
this->uniforms[id].atomic_buffer_index = -1;
this->uniforms[id].hidden =
current_var->data.how_declared == ir_var_hidden;
+ this->uniforms[id].is_shader_storage =
+ current_var->is_in_shader_storage_block();
if (this->ubo_block_index != -1) {
this->uniforms[id].block_index = this->ubo_block_index;
@@ -641,8 +643,12 @@ private:
this->ubo_byte_offset += type->std140_size(row_major);
if (type->is_array()) {
- this->uniforms[id].array_stride =
- glsl_align(type->fields.array->std140_size(row_major), 16);
+ if (type->interface_packing == GLSL_INTERFACE_PACKING_STD430)
+ this->uniforms[id].array_stride =
+ type->fields.array->std430_size(row_major);
+ else
+ this->uniforms[id].array_stride =
+ glsl_align(type->fields.array->std140_size(row_major), 16);
} else {
this->uniforms[id].array_stride = 0;
}
@@ -653,7 +659,11 @@ private:
const unsigned items = row_major ? matrix->matrix_columns : matrix->vector_elements;
assert(items <= 4);
- this->uniforms[id].matrix_stride = glsl_align(items * N, 16);
+ if (type->interface_packing == GLSL_INTERFACE_PACKING_STD430)
+ this->uniforms[id].matrix_stride = items < 3 ? items * N :
+ glsl_align(items * N, 16);
+ else
+ this->uniforms[id].matrix_stride = glsl_align(items * N, 16);
this->uniforms[id].row_major = row_major;
} else {
this->uniforms[id].matrix_stride = 0;
diff --git a/src/glsl/linker.cpp b/src/glsl/linker.cpp
index fcf081b..e73cc7f 100644
--- a/src/glsl/linker.cpp
+++ b/src/glsl/linker.cpp
@@ -2780,14 +2780,18 @@ build_program_resource_list(struct gl_context *ctx,
}
}
- if (!add_program_resource(shProg, GL_UNIFORM,
+ bool is_shader_storage = shProg->UniformStorage[i].is_shader_storage;
+ GLenum type = is_shader_storage ? GL_BUFFER_VARIABLE : GL_UNIFORM;
+ if (!add_program_resource(shProg, type,
&shProg->UniformStorage[i], stageref))
return;
}
- /* Add program uniform blocks. */
+ /* Add program uniform blocks and shader storage blocks. */
for (unsigned i = 0; i < shProg->NumUniformBlocks; i++) {
- if (!add_program_resource(shProg, GL_UNIFORM_BLOCK,
+ bool is_shader_storage = shProg->UniformBlocks[i].IsShaderStorage;
+ GLenum type = is_shader_storage ? GL_SHADER_STORAGE_BLOCK : GL_UNIFORM_BLOCK;
+ if (!add_program_resource(shProg, type,
&shProg->UniformBlocks[i], 0))
return;
}
diff --git a/src/mesa/main/program_resource.c b/src/mesa/main/program_resource.c
index d857b84..0444e3b 100644
--- a/src/mesa/main/program_resource.c
+++ b/src/mesa/main/program_resource.c
@@ -40,6 +40,8 @@ supported_interface_enum(GLenum iface)
case GL_PROGRAM_OUTPUT:
case GL_TRANSFORM_FEEDBACK_VARYING:
case GL_ATOMIC_COUNTER_BUFFER:
+ case GL_BUFFER_VARIABLE:
+ case GL_SHADER_STORAGE_BLOCK:
return true;
case GL_VERTEX_SUBROUTINE:
case GL_TESS_CONTROL_SUBROUTINE:
@@ -53,8 +55,6 @@ supported_interface_enum(GLenum iface)
case GL_GEOMETRY_SUBROUTINE_UNIFORM:
case GL_FRAGMENT_SUBROUTINE_UNIFORM:
case GL_COMPUTE_SUBROUTINE_UNIFORM:
- case GL_BUFFER_VARIABLE:
- case GL_SHADER_STORAGE_BLOCK:
default:
return false;
}
@@ -116,6 +116,7 @@ _mesa_GetProgramInterfaceiv(GLuint program, GLenum programInterface,
case GL_MAX_NUM_ACTIVE_VARIABLES:
switch (programInterface) {
case GL_UNIFORM_BLOCK:
+ case GL_SHADER_STORAGE_BLOCK:
for (i = 0, *params = 0; i < shProg->NumProgramResourceList; i++) {
if (shProg->ProgramResourceList[i].Type == programInterface) {
struct gl_uniform_block *block =
@@ -220,12 +221,14 @@ _mesa_GetProgramResourceIndex(GLuint program, GLenum programInterface,
case GL_PROGRAM_INPUT:
case GL_PROGRAM_OUTPUT:
case GL_UNIFORM:
+ case GL_BUFFER_VARIABLE:
case GL_TRANSFORM_FEEDBACK_VARYING:
/* Validate name syntax for array variables */
if (!valid_program_resource_index_name(name))
return GL_INVALID_INDEX;
/* fall-through */
case GL_UNIFORM_BLOCK:
+ case GL_SHADER_STORAGE_BLOCK:
res = _mesa_program_resource_find_name(shProg, programInterface, name);
if (!res)
return GL_INVALID_INDEX;
diff --git a/src/mesa/main/shader_query.cpp b/src/mesa/main/shader_query.cpp
index 3445f89..4c7c0b7 100644
--- a/src/mesa/main/shader_query.cpp
+++ b/src/mesa/main/shader_query.cpp
@@ -481,6 +481,7 @@ _mesa_program_resource_name(struct gl_program_resource *res)
{
switch (res->Type) {
case GL_UNIFORM_BLOCK:
+ case GL_SHADER_STORAGE_BLOCK:
return RESOURCE_UBO(res)->Name;
case GL_TRANSFORM_FEEDBACK_VARYING:
return RESOURCE_XFB(res)->Name;
@@ -488,6 +489,7 @@ _mesa_program_resource_name(struct gl_program_resource *res)
case GL_PROGRAM_OUTPUT:
return RESOURCE_VAR(res)->name;
case GL_UNIFORM:
+ case GL_BUFFER_VARIABLE:
return RESOURCE_UNI(res)->name;
default:
assert(!"support for resource type not implemented");
@@ -507,9 +509,11 @@ _mesa_program_resource_array_size(struct gl_program_resource *res)
case GL_PROGRAM_OUTPUT:
return RESOURCE_VAR(res)->data.max_array_access;
case GL_UNIFORM:
+ case GL_BUFFER_VARIABLE:
return RESOURCE_UNI(res)->array_elements;
case GL_ATOMIC_COUNTER_BUFFER:
case GL_UNIFORM_BLOCK:
+ case GL_SHADER_STORAGE_BLOCK:
return 0;
default:
assert(!"support for resource type not implemented");
@@ -552,6 +556,8 @@ _mesa_program_resource_find_name(struct gl_shader_program *shProg,
case GL_TRANSFORM_FEEDBACK_VARYING:
case GL_UNIFORM_BLOCK:
case GL_UNIFORM:
+ case GL_SHADER_STORAGE_BLOCK:
+ case GL_BUFFER_VARIABLE:
if (strncmp(rname, name, baselen) == 0) {
/* Basename match, check if array or struct. */
if (name[baselen] == '\0' ||
@@ -600,6 +606,7 @@ _mesa_program_resource_index(struct gl_shader_program *shProg,
switch (res->Type) {
case GL_UNIFORM_BLOCK:
+ case GL_SHADER_STORAGE_BLOCK:
return RESOURCE_UBO(res)- shProg->UniformBlocks;
case GL_ATOMIC_COUNTER_BUFFER:
return RESOURCE_ATC(res) - shProg->AtomicBuffers;
@@ -625,6 +632,7 @@ _mesa_program_resource_find_index(struct gl_shader_program *shProg,
switch (res->Type) {
case GL_UNIFORM_BLOCK:
case GL_ATOMIC_COUNTER_BUFFER:
+ case GL_SHADER_STORAGE_BLOCK:
if (_mesa_program_resource_index(shProg, res) == index)
return res;
break;
@@ -632,6 +640,7 @@ _mesa_program_resource_find_index(struct gl_shader_program *shProg,
case GL_PROGRAM_INPUT:
case GL_PROGRAM_OUTPUT:
case GL_UNIFORM:
+ case GL_BUFFER_VARIABLE:
if (++idx == (int) index)
return res;
break;
@@ -762,6 +771,197 @@ program_resource_location(struct gl_shader_program *shProg,
}
}
+static char*
+get_top_level_name(const char *name)
+{
+ const char *first_dot = strchr(name, '.');
+ const char *first_square_bracket = strchr(name, '[');
+ int name_size = 0;
+ /* From GL_shader_storage_buffer_object spec:
+ *
+ * "For the property TOP_LEVEL_ARRAY_SIZE, a single integer identifying the
+ * number of active array elements of the top-level shader storage block
+ * member containing to the active variable is written to <params>. If the
+ * top-level block member is not declared as an array, the value one is
+ * written to <params>. If the top-level block member is an array with no
+ * declared size, the value zero is written to <params>.
+ */
+
+ /* The buffer variable is on top level.*/
+ if (!first_square_bracket && !first_dot)
+ name_size = strlen(name);
+ else if ((!first_square_bracket ||
+ (first_dot && first_dot < first_square_bracket)))
+ name_size = first_dot - name;
+ else
+ name_size = first_square_bracket - name;
+
+ return strndup(name, name_size);
+}
+
+static char*
+get_var_name(const char *name)
+{
+ const char *first_dot = strchr(name, '.');
+
+ if (!first_dot)
+ return strdup(name);
+
+ return strndup(first_dot+1, strlen(first_dot) - 1);
+}
+
+static GLint
+program_resource_top_level_array_size(struct gl_shader_program *shProg,
+ struct gl_program_resource *res,
+ const char *name)
+{
+ int block_index = RESOURCE_UNI(res)->block_index;
+ int array_size = -1;
+ char *var_name = get_top_level_name(name);
+ char *interface_name =
+ get_top_level_name(shProg->UniformBlocks[block_index].Name);
+
+ if (strcmp(var_name, interface_name) == 0) {
+ /* Deal with instanced array of SSBOs */
+ char *temp_name = get_var_name(name);
+ free(var_name);
+ var_name = get_top_level_name(temp_name);
+ free(temp_name);
+ }
+
+ for (unsigned i = 0; i < shProg->NumShaders; i++) {
+ if (shProg->Shaders[i] == NULL)
+ continue;
+
+ const gl_shader *stage = shProg->Shaders[i];
+ foreach_in_list(ir_instruction, node, stage->ir) {
+ ir_variable *var = node->as_variable();
+ if (!var || !var->get_interface_type() ||
+ var->data.mode != ir_var_shader_storage)
+ continue;
+
+ const glsl_type *interface = var->get_interface_type();
+
+ if (strcmp(interface_name, interface->name) != 0) {
+ continue;
+ }
+
+ for (unsigned i = 0; i < interface->length; i++) {
+ const glsl_struct_field *field = &interface->fields.structure[i];
+ if (strcmp(field->name, var_name) != 0)
+ continue;
+ /* From GL_ARB_program_interface_query spec:
+ *
+ * "For the property TOP_LEVEL_ARRAY_SIZE, a single integer
+ * identifying the number of active array elements of the top-level
+ * shader storage block member containing to the active variable is
+ * written to <params>. If the top-level block member is not
+ * declared as an array, the value one is written to <params>. If
+ * the top-level block member is an array with no declared size,
+ * the value zero is written to <params>.
+ */
+ if (field->type->is_unsized_array())
+ array_size = 0;
+ else if (field->type->is_array())
+ array_size = field->type->length;
+ else
+ array_size = 1;
+ goto found_top_level_array_size;
+ }
+ }
+ }
+found_top_level_array_size:
+ free(interface_name);
+ free(var_name);
+ return array_size;
+}
+
+static GLint
+program_resource_top_level_array_stride(struct gl_shader_program *shProg,
+ struct gl_program_resource *res,
+ const char *name)
+{
+ int block_index = RESOURCE_UNI(res)->block_index;
+ int array_stride = -1;
+ char *var_name = get_top_level_name(name);
+ char *interface_name =
+ get_top_level_name(shProg->UniformBlocks[block_index].Name);
+
+ if (strcmp(var_name, interface_name) == 0) {
+ /* Deal with instanced array of SSBOs */
+ char *temp_name = get_var_name(name);
+ free(var_name);
+ var_name = get_top_level_name(temp_name);
+ free(temp_name);
+ }
+
+ for (unsigned i = 0; i < shProg->NumShaders; i++) {
+ if (shProg->Shaders[i] == NULL)
+ continue;
+
+ const gl_shader *stage = shProg->Shaders[i];
+ foreach_in_list(ir_instruction, node, stage->ir) {
+ ir_variable *var = node->as_variable();
+ if (!var || !var->get_interface_type() ||
+ var->data.mode != ir_var_shader_storage)
+ continue;
+
+ const glsl_type *interface = var->get_interface_type();
+
+ if (strcmp(interface_name, interface->name) != 0) {
+ continue;
+ }
+
+ for (unsigned i = 0; i < interface->length; i++) {
+ const glsl_struct_field *field = &interface->fields.structure[i];
+ if (strcmp(field->name, var_name) != 0)
+ continue;
+ /* From GL_ARB_program_interface_query:
+ *
+ * "For the property TOP_LEVEL_ARRAY_STRIDE, a single integer
+ * identifying the stride between array elements of the top-level
+ * shader storage block member containing the active variable is
+ * written to <params>. For top-level block members declared as
+ * arrays, the value written is the difference, in basic machine
+ * units, between the offsets of the active variable for
+ * consecutive elements in the top-level array. For top-level
+ * block members not declared as an array, zero is written to
+ * <params>."
+ */
+ if (field->type->is_array()) {
+ const enum glsl_matrix_layout matrix_layout =
+ glsl_matrix_layout(field->matrix_layout);
+ bool row_major = matrix_layout == GLSL_MATRIX_LAYOUT_ROW_MAJOR;
+ const glsl_type *array_type = field->type->fields.array;
+
+ if (array_type->is_record()) {
+ if (field->type->interface_packing == GLSL_INTERFACE_PACKING_STD430) {
+ array_stride = array_type->std430_size(row_major);
+ } else {
+ array_stride = array_type->std140_size(row_major);
+ array_stride = glsl_align(array_stride, 16);
+ }
+ } else {
+ unsigned element_base_align = 0;
+ if (field->type->interface_packing == GLSL_INTERFACE_PACKING_STD430) {
+ array_stride = array_type->std430_base_alignment(row_major);
+ } else {
+ element_base_align = array_type->std140_base_alignment(row_major);
+ array_stride = MAX2(element_base_align, 16);
+ }
+ }
+ } else {
+ array_stride = 0;
+ }
+ goto found_top_level_array_size;
+ }
+ }
+ }
+found_top_level_array_size:
+ free(var_name);
+ return array_stride;
+}
+
/**
* Function implements following location queries:
* glGetAttribLocation
@@ -834,7 +1034,7 @@ is_resource_referenced(struct gl_shader_program *shProg,
if (res->Type == GL_ATOMIC_COUNTER_BUFFER)
return RESOURCE_ATC(res)->StageReferences[stage];
- if (res->Type == GL_UNIFORM_BLOCK)
+ if (res->Type == GL_UNIFORM_BLOCK || res->Type == GL_SHADER_STORAGE_BLOCK)
return shProg->UniformBlockStageIndex[stage][index] != -1;
return res->StageReferences & (1 << stage);
@@ -847,7 +1047,8 @@ get_buffer_property(struct gl_shader_program *shProg,
{
GET_CURRENT_CONTEXT(ctx);
if (res->Type != GL_UNIFORM_BLOCK &&
- res->Type != GL_ATOMIC_COUNTER_BUFFER)
+ res->Type != GL_ATOMIC_COUNTER_BUFFER &&
+ res->Type != GL_SHADER_STORAGE_BLOCK)
goto invalid_operation;
if (res->Type == GL_UNIFORM_BLOCK) {
@@ -881,6 +1082,37 @@ get_buffer_property(struct gl_shader_program *shProg,
}
return RESOURCE_UBO(res)->NumUniforms;
}
+ } else if (res->Type == GL_SHADER_STORAGE_BLOCK) {
+ switch (prop) {
+ case GL_BUFFER_BINDING:
+ *val = RESOURCE_UBO(res)->Binding;
+ return 1;
+ case GL_BUFFER_DATA_SIZE:
+ *val = RESOURCE_UBO(res)->UniformBufferSize;
+ return 1;
+ case GL_NUM_ACTIVE_VARIABLES:
+ *val = 0;
+ for (unsigned i = 0; i < RESOURCE_UBO(res)->NumUniforms; i++) {
+ const char *iname = RESOURCE_UBO(res)->Uniforms[i].IndexName;
+ struct gl_program_resource *uni =
+ _mesa_program_resource_find_name(shProg, GL_BUFFER_VARIABLE, iname);
+ if (!uni)
+ continue;
+ (*val)++;
+ }
+ return 1;
+ case GL_ACTIVE_VARIABLES:
+ for (unsigned i = 0; i < RESOURCE_UBO(res)->NumUniforms; i++) {
+ const char *iname = RESOURCE_UBO(res)->Uniforms[i].IndexName;
+ struct gl_program_resource *uni =
+ _mesa_program_resource_find_name(shProg, GL_BUFFER_VARIABLE, iname);
+ if (!uni)
+ continue;
+ *val++ =
+ _mesa_program_resource_index(shProg, uni);
+ }
+ return RESOURCE_UBO(res)->NumUniforms;
+ }
} else if (res->Type == GL_ATOMIC_COUNTER_BUFFER) {
switch (prop) {
case GL_BUFFER_BINDING:
@@ -919,6 +1151,10 @@ _mesa_program_resource_prop(struct gl_shader_program *shProg,
if (res->Type != type)\
goto invalid_operation;
+#define VALIDATE_TYPE_2(type1, type2)\
+ if (res->Type != type1 && res->Type != type2)\
+ goto invalid_operation;
+
switch(prop) {
case GL_NAME_LENGTH:
if (res->Type == GL_ATOMIC_COUNTER_BUFFER)
@@ -930,6 +1166,7 @@ _mesa_program_resource_prop(struct gl_shader_program *shProg,
case GL_TYPE:
switch (res->Type) {
case GL_UNIFORM:
+ case GL_BUFFER_VARIABLE:
*val = RESOURCE_UNI(res)->type->gl_type;
return 1;
case GL_PROGRAM_INPUT:
@@ -945,6 +1182,7 @@ _mesa_program_resource_prop(struct gl_shader_program *shProg,
case GL_ARRAY_SIZE:
switch (res->Type) {
case GL_UNIFORM:
+ case GL_BUFFER_VARIABLE:
*val = MAX2(RESOURCE_UNI(res)->array_elements, 1);
return 1;
case GL_PROGRAM_INPUT:
@@ -958,23 +1196,23 @@ _mesa_program_resource_prop(struct gl_shader_program *shProg,
goto invalid_operation;
}
case GL_OFFSET:
- VALIDATE_TYPE(GL_UNIFORM);
+ VALIDATE_TYPE_2(GL_UNIFORM, GL_BUFFER_VARIABLE);
*val = RESOURCE_UNI(res)->offset;
return 1;
case GL_BLOCK_INDEX:
- VALIDATE_TYPE(GL_UNIFORM);
+ VALIDATE_TYPE_2(GL_UNIFORM, GL_BUFFER_VARIABLE);
*val = RESOURCE_UNI(res)->block_index;
return 1;
case GL_ARRAY_STRIDE:
- VALIDATE_TYPE(GL_UNIFORM);
+ VALIDATE_TYPE_2(GL_UNIFORM, GL_BUFFER_VARIABLE);
*val = RESOURCE_UNI(res)->array_stride;
return 1;
case GL_MATRIX_STRIDE:
- VALIDATE_TYPE(GL_UNIFORM);
+ VALIDATE_TYPE_2(GL_UNIFORM, GL_BUFFER_VARIABLE);
*val = RESOURCE_UNI(res)->matrix_stride;
return 1;
case GL_IS_ROW_MAJOR:
- VALIDATE_TYPE(GL_UNIFORM);
+ VALIDATE_TYPE_2(GL_UNIFORM, GL_BUFFER_VARIABLE);
*val = RESOURCE_UNI(res)->row_major;
return 1;
case GL_ATOMIC_COUNTER_BUFFER_INDEX:
@@ -998,6 +1236,8 @@ _mesa_program_resource_prop(struct gl_shader_program *shProg,
case GL_PROGRAM_INPUT:
case GL_PROGRAM_OUTPUT:
case GL_UNIFORM_BLOCK:
+ case GL_BUFFER_VARIABLE:
+ case GL_SHADER_STORAGE_BLOCK:
case GL_ATOMIC_COUNTER_BUFFER:
*val = is_resource_referenced(shProg, res, index,
stage_from_enum(prop));
@@ -1022,6 +1262,17 @@ _mesa_program_resource_prop(struct gl_shader_program *shProg,
*val = RESOURCE_VAR(res)->data.index;
return 1;
+ case GL_TOP_LEVEL_ARRAY_SIZE:
+ VALIDATE_TYPE(GL_BUFFER_VARIABLE);
+ *val = program_resource_top_level_array_size(shProg, res,
+ _mesa_program_resource_name(res));
+ return 1;
+
+ case GL_TOP_LEVEL_ARRAY_STRIDE:
+ VALIDATE_TYPE(GL_BUFFER_VARIABLE);
+ *val = program_resource_top_level_array_stride(shProg, res,
+ _mesa_program_resource_name(res));
+ return 1;
/* GL_ARB_tessellation_shader */
case GL_IS_PER_PATCH:
case GL_REFERENCED_BY_TESS_CONTROL_SHADER:
--
1.9.1
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