diff options
Diffstat (limited to 'mesalib/src/mesa/main/transformfeedback.c')
| -rw-r--r-- | mesalib/src/mesa/main/transformfeedback.c | 386 |
1 files changed, 327 insertions, 59 deletions
diff --git a/mesalib/src/mesa/main/transformfeedback.c b/mesalib/src/mesa/main/transformfeedback.c index ce678c864..103011ce5 100644 --- a/mesalib/src/mesa/main/transformfeedback.c +++ b/mesalib/src/mesa/main/transformfeedback.c @@ -514,22 +514,24 @@ _mesa_EndTransformFeedback(void) * Helper used by BindBufferRange() and BindBufferBase(). */ static void -bind_buffer_range(struct gl_context *ctx, GLuint index, +bind_buffer_range(struct gl_context *ctx, + struct gl_transform_feedback_object *obj, + GLuint index, struct gl_buffer_object *bufObj, - GLintptr offset, GLsizeiptr size) + GLintptr offset, GLsizeiptr size, + bool dsa) { - struct gl_transform_feedback_object *obj = - ctx->TransformFeedback.CurrentObject; - /* Note: no need to FLUSH_VERTICES or flag NewTransformFeedback, because * transform feedback buffers can't be changed while transform feedback is * active. */ - /* The general binding point */ - _mesa_reference_buffer_object(ctx, - &ctx->TransformFeedback.CurrentBuffer, - bufObj); + if (!dsa) { + /* The general binding point */ + _mesa_reference_buffer_object(ctx, + &ctx->TransformFeedback.CurrentBuffer, + bufObj); + } /* The per-attribute binding point */ _mesa_set_transform_feedback_binding(ctx, obj, index, bufObj, offset, size); @@ -539,75 +541,209 @@ bind_buffer_range(struct gl_context *ctx, GLuint index, /** * Specify a buffer object to receive transform feedback results. Plus, * specify the starting offset to place the results, and max size. - * Called from the glBindBufferRange() function. + * Called from the glBindBufferRange() and glTransformFeedbackBufferRange + * functions. */ void _mesa_bind_buffer_range_transform_feedback(struct gl_context *ctx, - GLuint index, - struct gl_buffer_object *bufObj, - GLintptr offset, - GLsizeiptr size) + struct gl_transform_feedback_object *obj, + GLuint index, + struct gl_buffer_object *bufObj, + GLintptr offset, + GLsizeiptr size, + bool dsa) { - struct gl_transform_feedback_object *obj; + const char *gl_methd_name; + if (dsa) + gl_methd_name = "glTransformFeedbackBufferRange"; + else + gl_methd_name = "glBindBufferRange"; - obj = ctx->TransformFeedback.CurrentObject; if (obj->Active) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glBindBufferRange(transform feedback active)"); + _mesa_error(ctx, GL_INVALID_OPERATION, "%s(transform feedback active)", + gl_methd_name); return; } if (index >= ctx->Const.MaxTransformFeedbackBuffers) { - _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferRange(index=%d)", index); + /* OpenGL 4.5 core profile, 6.1, pdf page 82: "An INVALID_VALUE error is + * generated if index is greater than or equal to the number of binding + * points for transform feedback, as described in section 6.7.1." + */ + _mesa_error(ctx, GL_INVALID_VALUE, "%s(index=%d out of bounds)", + gl_methd_name, index); return; } if (size & 0x3) { - /* must a multiple of four */ - _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferRange(size=%d)", (int) size); + /* OpenGL 4.5 core profile, 6.7, pdf page 103: multiple of 4 */ + _mesa_error(ctx, GL_INVALID_VALUE, "%s(size=%d must be a multiple of " + "four)", gl_methd_name, (int) size); return; } if (offset & 0x3) { - /* must be multiple of four */ - _mesa_error(ctx, GL_INVALID_VALUE, - "glBindBufferRange(offset=%d)", (int) offset); + /* OpenGL 4.5 core profile, 6.7, pdf page 103: multiple of 4 */ + _mesa_error(ctx, GL_INVALID_VALUE, "%s(offset=%d must be a multiple " + "of four)", gl_methd_name, (int) offset); return; - } + } + + if (offset < 0) { + /* OpenGL 4.5 core profile, 6.1, pdf page 82: "An INVALID_VALUE error is + * generated by BindBufferRange if offset is negative." + * + * OpenGL 4.5 core profile, 13.2, pdf page 445: "An INVALID_VALUE error + * is generated by TransformFeedbackBufferRange if offset is negative." + */ + _mesa_error(ctx, GL_INVALID_VALUE, "%s(offset=%d must be >= 0)", + gl_methd_name, + (int) offset); + return; + } - bind_buffer_range(ctx, index, bufObj, offset, size); + if (size <= 0 && (dsa || bufObj != ctx->Shared->NullBufferObj)) { + /* OpenGL 4.5 core profile, 6.1, pdf page 82: "An INVALID_VALUE error is + * generated by BindBufferRange if buffer is non-zero and size is less + * than or equal to zero." + * + * OpenGL 4.5 core profile, 13.2, pdf page 445: "An INVALID_VALUE error + * is generated by TransformFeedbackBufferRange if size is less than or + * equal to zero." + */ + _mesa_error(ctx, GL_INVALID_VALUE, "%s(size=%d must be > 0)", + gl_methd_name, (int) size); + return; + } + + bind_buffer_range(ctx, obj, index, bufObj, offset, size, dsa); } /** * Specify a buffer object to receive transform feedback results. * As above, but start at offset = 0. - * Called from the glBindBufferBase() function. + * Called from the glBindBufferBase() and glTransformFeedbackBufferBase() + * functions. */ void _mesa_bind_buffer_base_transform_feedback(struct gl_context *ctx, - GLuint index, - struct gl_buffer_object *bufObj) + struct gl_transform_feedback_object *obj, + GLuint index, + struct gl_buffer_object *bufObj, + bool dsa) { - struct gl_transform_feedback_object *obj; - - obj = ctx->TransformFeedback.CurrentObject; - if (obj->Active) { _mesa_error(ctx, GL_INVALID_OPERATION, - "glBindBufferBase(transform feedback active)"); + "%s(transform feedback active)", + dsa ? "glTransformFeedbackBufferBase" : "glBindBufferBase"); return; } if (index >= ctx->Const.MaxTransformFeedbackBuffers) { - _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferBase(index=%d)", index); + _mesa_error(ctx, GL_INVALID_VALUE, "%s(index=%d out of bounds)", + dsa ? "glTransformFeedbackBufferBase" : "glBindBufferBase", + index); + return; + } + + bind_buffer_range(ctx, obj, index, bufObj, 0, 0, dsa); +} + +/** + * Wrapper around lookup_transform_feedback_object that throws + * GL_INVALID_OPERATION if id is not in the hash table. After calling + * _mesa_error, it returns NULL. + */ +static struct gl_transform_feedback_object * +lookup_transform_feedback_object_err(struct gl_context *ctx, + GLuint xfb, const char* func) +{ + struct gl_transform_feedback_object *obj; + + obj = _mesa_lookup_transform_feedback_object(ctx, xfb); + if (!obj) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(xfb=%u: non-generated object name)", func, xfb); + } + + return obj; +} + +/** + * Wrapper around _mesa_lookup_bufferobj that throws GL_INVALID_VALUE if id + * is not in the hash table. Specialised version for the + * transform-feedback-related functions. After calling _mesa_error, it + * returns NULL. + */ +static struct gl_buffer_object * +lookup_transform_feedback_bufferobj_err(struct gl_context *ctx, + GLuint buffer, const char* func) +{ + struct gl_buffer_object *bufObj; + + /* OpenGL 4.5 core profile, 13.2, pdf page 444: buffer must be zero or the + * name of an existing buffer object. + */ + if (buffer == 0) { + bufObj = ctx->Shared->NullBufferObj; + } else { + bufObj = _mesa_lookup_bufferobj(ctx, buffer); + if (!bufObj) { + _mesa_error(ctx, GL_INVALID_VALUE, "%s(invalid buffer=%u)", func, + buffer); + } + } + + return bufObj; +} + +void GLAPIENTRY +_mesa_TransformFeedbackBufferBase(GLuint xfb, GLuint index, GLuint buffer) +{ + GET_CURRENT_CONTEXT(ctx); + struct gl_transform_feedback_object *obj; + struct gl_buffer_object *bufObj; + + obj = lookup_transform_feedback_object_err(ctx, xfb, + "glTransformFeedbackBufferBase"); + if(!obj) { + return; + } + + bufObj = lookup_transform_feedback_bufferobj_err(ctx, buffer, + "glTransformFeedbackBufferBase"); + if(!bufObj) { return; } - bind_buffer_range(ctx, index, bufObj, 0, 0); + _mesa_bind_buffer_base_transform_feedback(ctx, obj, index, bufObj, true); } +void GLAPIENTRY +_mesa_TransformFeedbackBufferRange(GLuint xfb, GLuint index, GLuint buffer, + GLintptr offset, GLsizeiptr size) +{ + GET_CURRENT_CONTEXT(ctx); + struct gl_transform_feedback_object *obj; + struct gl_buffer_object *bufObj; + + obj = lookup_transform_feedback_object_err(ctx, xfb, + "glTransformFeedbackBufferRange"); + if(!obj) { + return; + } + + bufObj = lookup_transform_feedback_bufferobj_err(ctx, buffer, + "glTransformFeedbackBufferRange"); + if(!bufObj) { + return; + } + + _mesa_bind_buffer_range_transform_feedback(ctx, obj, index, bufObj, offset, + size, true); +} /** * Specify a buffer object to receive transform feedback results, plus the @@ -660,7 +796,7 @@ _mesa_BindBufferOffsetEXT(GLenum target, GLuint index, GLuint buffer, return; } - bind_buffer_range(ctx, index, bufObj, offset, 0); + bind_buffer_range(ctx, obj, index, bufObj, offset, 0, false); } @@ -784,7 +920,7 @@ _mesa_GetTransformFeedbackVarying(GLuint program, GLuint index, GLsizei *size, GLenum *type, GLchar *name) { const struct gl_shader_program *shProg; - const struct gl_transform_feedback_info *linked_xfb_info; + struct gl_program_resource *res; GET_CURRENT_CONTEXT(ctx); shProg = _mesa_lookup_shader_program(ctx, program); @@ -794,22 +930,27 @@ _mesa_GetTransformFeedbackVarying(GLuint program, GLuint index, return; } - linked_xfb_info = &shProg->LinkedTransformFeedback; - if (index >= (GLuint) linked_xfb_info->NumVarying) { + res = _mesa_program_resource_find_index((struct gl_shader_program *) shProg, + GL_TRANSFORM_FEEDBACK_VARYING, + index); + if (!res) { _mesa_error(ctx, GL_INVALID_VALUE, "glGetTransformFeedbackVarying(index=%u)", index); return; } /* return the varying's name and length */ - _mesa_copy_string(name, bufSize, length, - linked_xfb_info->Varyings[index].Name); + _mesa_copy_string(name, bufSize, length, _mesa_program_resource_name(res)); /* return the datatype and value's size (in datatype units) */ if (type) - *type = linked_xfb_info->Varyings[index].Type; + _mesa_program_resource_prop((struct gl_shader_program *) shProg, + res, index, GL_TYPE, (GLint*) type, + "glGetTransformFeedbackVarying"); if (size) - *size = linked_xfb_info->Varyings[index].Size; + _mesa_program_resource_prop((struct gl_shader_program *) shProg, + res, index, GL_ARRAY_SIZE, (GLint*) size, + "glGetTransformFeedbackVarying"); } @@ -817,6 +958,10 @@ _mesa_GetTransformFeedbackVarying(GLuint program, GLuint index, struct gl_transform_feedback_object * _mesa_lookup_transform_feedback_object(struct gl_context *ctx, GLuint name) { + /* OpenGL 4.5 core profile, 13.2 pdf page 444: "xfb must be zero, indicating + * the default transform feedback object, or the name of an existing + * transform feedback object." + */ if (name == 0) { return ctx->TransformFeedback.DefaultObject; } @@ -825,25 +970,24 @@ _mesa_lookup_transform_feedback_object(struct gl_context *ctx, GLuint name) _mesa_HashLookup(ctx->TransformFeedback.Objects, name); } - -/** - * Create new transform feedback objects. Transform feedback objects - * encapsulate the state related to transform feedback to allow quickly - * switching state (and drawing the results, below). - * Part of GL_ARB_transform_feedback2. - */ -void GLAPIENTRY -_mesa_GenTransformFeedbacks(GLsizei n, GLuint *names) +static void +create_transform_feedbacks(struct gl_context *ctx, GLsizei n, GLuint *ids, + bool dsa) { GLuint first; - GET_CURRENT_CONTEXT(ctx); + const char* func; + + if (dsa) + func = "glCreateTransformFeedbacks"; + else + func = "glGenTransformFeedbacks"; if (n < 0) { - _mesa_error(ctx, GL_INVALID_VALUE, "glGenTransformFeedbacks(n < 0)"); + _mesa_error(ctx, GL_INVALID_VALUE, "%s(n < 0)", func); return; } - if (!names) + if (!ids) return; /* we don't need contiguous IDs, but this might be faster */ @@ -854,18 +998,56 @@ _mesa_GenTransformFeedbacks(GLsizei n, GLuint *names) struct gl_transform_feedback_object *obj = ctx->Driver.NewTransformFeedback(ctx, first + i); if (!obj) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenTransformFeedbacks"); + _mesa_error(ctx, GL_OUT_OF_MEMORY, "%s", func); return; } - names[i] = first + i; + ids[i] = first + i; _mesa_HashInsert(ctx->TransformFeedback.Objects, first + i, obj); + if (dsa) { + /* this is normally done at bind time in the non-dsa case */ + obj->EverBound = GL_TRUE; + } } } else { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenTransformFeedbacks"); + _mesa_error(ctx, GL_OUT_OF_MEMORY, "%s", func); } } +/** + * Create new transform feedback objects. Transform feedback objects + * encapsulate the state related to transform feedback to allow quickly + * switching state (and drawing the results, below). + * Part of GL_ARB_transform_feedback2. + */ +void GLAPIENTRY +_mesa_GenTransformFeedbacks(GLsizei n, GLuint *names) +{ + GET_CURRENT_CONTEXT(ctx); + + /* GenTransformFeedbacks should just reserve the object names that a + * subsequent call to BindTransformFeedback should actively create. For + * the sake of simplicity, we reserve the names and create the objects + * straight away. + */ + + create_transform_feedbacks(ctx, n, names, false); +} + +/** + * Create new transform feedback objects. Transform feedback objects + * encapsulate the state related to transform feedback to allow quickly + * switching state (and drawing the results, below). + * Part of GL_ARB_direct_state_access. + */ +void GLAPIENTRY +_mesa_CreateTransformFeedbacks(GLsizei n, GLuint *names) +{ + GET_CURRENT_CONTEXT(ctx); + + create_transform_feedbacks(ctx, n, names, true); +} + /** * Is the given ID a transform feedback object? @@ -1026,3 +1208,89 @@ _mesa_ResumeTransformFeedback(void) assert(ctx->Driver.ResumeTransformFeedback); ctx->Driver.ResumeTransformFeedback(ctx, obj); } + +extern void GLAPIENTRY +_mesa_GetTransformFeedbackiv(GLuint xfb, GLenum pname, GLint *param) +{ + struct gl_transform_feedback_object *obj; + GET_CURRENT_CONTEXT(ctx); + + obj = lookup_transform_feedback_object_err(ctx, xfb, + "glGetTransformFeedbackiv"); + if(!obj) { + return; + } + + switch(pname) { + case GL_TRANSFORM_FEEDBACK_PAUSED: + *param = obj->Paused; + break; + case GL_TRANSFORM_FEEDBACK_ACTIVE: + *param = obj->Active; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetTransformFeedbackiv(pname=%i)", pname); + } +} + +extern void GLAPIENTRY +_mesa_GetTransformFeedbacki_v(GLuint xfb, GLenum pname, GLuint index, + GLint *param) +{ + struct gl_transform_feedback_object *obj; + GET_CURRENT_CONTEXT(ctx); + + obj = lookup_transform_feedback_object_err(ctx, xfb, + "glGetTransformFeedbacki_v"); + if(!obj) { + return; + } + + if (index >= ctx->Const.MaxTransformFeedbackBuffers) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glGetTransformFeedbacki_v(index=%i)", index); + return; + } + + switch(pname) { + case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING: + *param = obj->BufferNames[index]; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetTransformFeedbacki_v(pname=%i)", pname); + } +} + +extern void GLAPIENTRY +_mesa_GetTransformFeedbacki64_v(GLuint xfb, GLenum pname, GLuint index, + GLint64 *param) +{ + struct gl_transform_feedback_object *obj; + GET_CURRENT_CONTEXT(ctx); + + obj = lookup_transform_feedback_object_err(ctx, xfb, + "glGetTransformFeedbacki64_v"); + if(!obj) { + return; + } + + if (index >= ctx->Const.MaxTransformFeedbackBuffers) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glGetTransformFeedbacki64_v(index=%i)", index); + return; + } + + switch(pname) { + case GL_TRANSFORM_FEEDBACK_BUFFER_START: + *param = obj->Offset[index]; + break; + case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE: + *param = obj->RequestedSize[index]; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetTransformFeedbacki64_v(pname=%i)", pname); + } +} |