From a5d165afed8dae34f0b4f281fc1c390d019e9b97 Mon Sep 17 00:00:00 2001 From: Martin Peres Date: Tue, 20 Jan 2015 16:30:32 +0200 Subject: main: Added entry point for glTransformFeedbackBufferBase v2: Review from Laura Ekstrand - give more helpful error messages - factor the lookup code for the xfb and objBuf - replace some already-existing tabs with spaces - add comments to explain the cases where xfb == 0 or buffer == 0 - fix the condition for binding the transform buffer or not v3: Review from Laura Ekstrand - rename _mesa_lookup_bufferobj_err to _mesa_lookup_transform_feedback_bufferobj_err and make it static to avoid a future conflict - make _mesa_lookup_transform_feedback_object_err static v4: Review from Laura Ekstrand - add the pdf page number when quoting the spec - rename some of the symbols to follow the public/private conventions v5: Review from Laura Ekstrand - properly rename some of the symbols to follow the public/private conventions - fix some alignments - add quotes around a spec citation - add back a newline I accidentally deleted - add spaces around the ternary operator usages Signed-off-by: Martin Peres Reviewed-by: Laura Ekstrand --- src/mapi/glapi/gen/ARB_direct_state_access.xml | 6 ++ src/mesa/main/bufferobj.c | 9 +- src/mesa/main/tests/dispatch_sanity.cpp | 1 + src/mesa/main/transformfeedback.c | 138 +++++++++++++++++++------ src/mesa/main/transformfeedback.h | 10 +- 5 files changed, 129 insertions(+), 35 deletions(-) diff --git a/src/mapi/glapi/gen/ARB_direct_state_access.xml b/src/mapi/glapi/gen/ARB_direct_state_access.xml index 0c7e88004ea..02e33cd4a75 100644 --- a/src/mapi/glapi/gen/ARB_direct_state_access.xml +++ b/src/mapi/glapi/gen/ARB_direct_state_access.xml @@ -14,6 +14,12 @@ + + + + + + diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c index 96587708423..e73793638c9 100644 --- a/src/mesa/main/bufferobj.c +++ b/src/mesa/main/bufferobj.c @@ -3885,8 +3885,9 @@ _mesa_BindBufferRange(GLenum target, GLuint index, switch (target) { case GL_TRANSFORM_FEEDBACK_BUFFER: - _mesa_bind_buffer_range_transform_feedback(ctx, index, bufObj, - offset, size); + _mesa_bind_buffer_range_transform_feedback(ctx, + ctx->TransformFeedback.CurrentObject, + index, bufObj, offset, size); return; case GL_UNIFORM_BUFFER: bind_buffer_range_uniform_buffer(ctx, index, bufObj, offset, size); @@ -3950,7 +3951,9 @@ _mesa_BindBufferBase(GLenum target, GLuint index, GLuint buffer) switch (target) { case GL_TRANSFORM_FEEDBACK_BUFFER: - _mesa_bind_buffer_base_transform_feedback(ctx, index, bufObj); + _mesa_bind_buffer_base_transform_feedback(ctx, + ctx->TransformFeedback.CurrentObject, + index, bufObj, false); return; case GL_UNIFORM_BUFFER: bind_buffer_base_uniform_buffer(ctx, index, bufObj); diff --git a/src/mesa/main/tests/dispatch_sanity.cpp b/src/mesa/main/tests/dispatch_sanity.cpp index 899a1881d34..315571d6fed 100644 --- a/src/mesa/main/tests/dispatch_sanity.cpp +++ b/src/mesa/main/tests/dispatch_sanity.cpp @@ -923,6 +923,7 @@ const struct function gl_core_functions_possible[] = { /* GL_ARB_direct_state_access */ { "glCreateTransformFeedbacks", 45, -1 }, + { "glTransformFeedbackBufferBase", 45, -1 }, { "glCreateBuffers", 45, -1 }, { "glNamedBufferStorage", 45, -1 }, { "glNamedBufferData", 45, -1 }, diff --git a/src/mesa/main/transformfeedback.c b/src/mesa/main/transformfeedback.c index 3c19406a55d..1b2bd8d77af 100644 --- a/src/mesa/main/transformfeedback.c +++ b/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); @@ -543,15 +545,12 @@ bind_buffer_range(struct gl_context *ctx, GLuint index, */ 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) { - struct gl_transform_feedback_object *obj; - - obj = ctx->TransformFeedback.CurrentObject; - if (obj->Active) { _mesa_error(ctx, GL_INVALID_OPERATION, "glBindBufferRange(transform feedback active)"); @@ -559,13 +558,15 @@ _mesa_bind_buffer_range_transform_feedback(struct gl_context *ctx, } if (index >= ctx->Const.MaxTransformFeedbackBuffers) { - _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferRange(index=%d)", index); + _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferRange(index=%d " + "out of bounds)", index); return; } if (size & 0x3) { /* must a multiple of four */ - _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferRange(size=%d)", (int) size); + _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferRange(size=%d)", + (int) size); return; } @@ -576,38 +577,109 @@ _mesa_bind_buffer_range_transform_feedback(struct gl_context *ctx, return; } - bind_buffer_range(ctx, index, bufObj, offset, size); + bind_buffer_range(ctx, obj, index, bufObj, offset, size, false); } /** * 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, index, bufObj, 0, 0); + 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; + } + + _mesa_bind_buffer_base_transform_feedback(ctx, obj, index, bufObj, true); +} /** * Specify a buffer object to receive transform feedback results, plus the @@ -660,7 +732,7 @@ _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); } @@ -817,6 +889,10 @@ _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; } diff --git a/src/mesa/main/transformfeedback.h b/src/mesa/main/transformfeedback.h index 9de1fef2137..aac7433d14b 100644 --- a/src/mesa/main/transformfeedback.h +++ b/src/mesa/main/transformfeedback.h @@ -65,6 +65,7 @@ _mesa_EndTransformFeedback(void); extern void _mesa_bind_buffer_range_transform_feedback(struct gl_context *ctx, + struct gl_transform_feedback_object *obj, GLuint index, struct gl_buffer_object *bufObj, GLintptr offset, @@ -72,8 +73,10 @@ _mesa_bind_buffer_range_transform_feedback(struct gl_context *ctx, extern void _mesa_bind_buffer_base_transform_feedback(struct gl_context *ctx, + struct gl_transform_feedback_object *obj, GLuint index, - struct gl_buffer_object *bufObj); + struct gl_buffer_object *bufObj, + bool dsa); extern void GLAPIENTRY _mesa_BindBufferOffsetEXT(GLenum target, GLuint index, GLuint buffer, @@ -144,4 +147,9 @@ _mesa_set_transform_feedback_binding(struct gl_context *ctx, tfObj->RequestedSize[index] = size; } +/*** GL_ARB_direct_state_access ***/ + +extern void GLAPIENTRY +_mesa_TransformFeedbackBufferBase(GLuint xfb, GLuint index, GLuint buffer); + #endif /* TRANSFORM_FEEDBACK_H */ -- cgit v1.2.3