diff options
| -rw-r--r-- | src/mesa/vbo/vbo.h | 57 |
1 files changed, 55 insertions, 2 deletions
diff --git a/src/mesa/vbo/vbo.h b/src/mesa/vbo/vbo.h index 164477f3ac6..6ae6991cad2 100644 --- a/src/mesa/vbo/vbo.h +++ b/src/mesa/vbo/vbo.h @@ -119,6 +119,43 @@ void vbo_save_EndCallList(struct gl_context *ctx); +/** + * For indirect array drawing: + * + * typedef struct { + * GLuint count; + * GLuint primCount; + * GLuint first; + * GLuint baseInstance; // in GL 4.2 and later, must be zero otherwise + * } DrawArraysIndirectCommand; + * + * For indirect indexed drawing: + * + * typedef struct { + * GLuint count; + * GLuint primCount; + * GLuint firstIndex; + * GLint baseVertex; + * GLuint baseInstance; // in GL 4.2 and later, must be zero otherwise + * } DrawElementsIndirectCommand; + */ + + +/** + * Draw a number of primitives. + * \param prims array [nr_prims] describing what to draw (prim type, + * vertex count, first index, instance count, etc). + * \param ib index buffer for indexed drawing, NULL for array drawing + * \param index_bounds_valid are min_index and max_index valid? + * \param min_index lowest vertex index used + * \param max_index highest vertex index used + * \param tfb_vertcount describes TFB output, or NULL + * \param stream If called via DrawTransformFeedback, specifies the vertex + * stream buffer from which to get the vertex count + * \param indirect If any prims are indirect, this specifies the buffer + * to find the "DrawArrays/ElementsIndirectCommand" data. + * This may be deprecated in the future + */ typedef void (*vbo_draw_func)(struct gl_context *ctx, const struct _mesa_prim *prims, GLuint nr_prims, @@ -131,6 +168,22 @@ typedef void (*vbo_draw_func)(struct gl_context *ctx, struct gl_buffer_object *indirect); +/** + * Draw a primitive, getting the vertex count, instance count, start + * vertex, etc. from a buffer object. + * \param mode GL_POINTS, GL_LINES, GL_TRIANGLE_STRIP, etc. + * \param indirect_data buffer to get "DrawArrays/ElementsIndirectCommand" data + * \param indirect_offset offset of first primitive in indrect_data buffer + * \param draw_count number of primitives to draw + * \param stride stride, in bytes, between "DrawArrays/ElementsIndirectCommand" + * objects + * \param indirect_draw_count_buffer if non-NULL specifies a buffer to get the + * real draw_count value. Used for + * GL_ARB_indirect_parameters. + * \param indirect_draw_count_offset offset to the draw_count value in + * indirect_draw_count_buffer + * \param ib index buffer for indexed drawing, NULL otherwise. + */ typedef void (*vbo_indirect_draw_func)( struct gl_context *ctx, GLuint mode, @@ -138,8 +191,8 @@ typedef void (*vbo_indirect_draw_func)( GLsizeiptr indirect_offset, unsigned draw_count, unsigned stride, - struct gl_buffer_object *indirect_params, - GLsizeiptr indirect_params_offset, + struct gl_buffer_object *indirect_draw_count_buffer, + GLsizeiptr indirect_draw_count_offset, const struct _mesa_index_buffer *ib); |