With the issues below fixed,
Reviewed-by: Ian Romanick <ian.d.roman...@intel.com>
On 11/09/2013 01:02 AM, Chris Forbes wrote:
> Based on part of Patch 2 of Christoph Bumiller's ARB_draw_indirect series.
>
> Signed-off-by: Chris Forbes <chr...@ijw.co.nz>
> ---
> src/mesa/vbo/vbo_exec_array.c | 216
> ++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 216 insertions(+)
>
> diff --git a/src/mesa/vbo/vbo_exec_array.c b/src/mesa/vbo/vbo_exec_array.c
> index 4ea10ee..1c6b8b3 100644
> --- a/src/mesa/vbo/vbo_exec_array.c
> +++ b/src/mesa/vbo/vbo_exec_array.c
> @@ -1564,6 +1564,164 @@ vbo_exec_DrawTransformFeedbackStreamInstanced(GLenum
> mode, GLuint name,
> vbo_draw_transform_feedback(ctx, mode, obj, stream, primcount);
> }
>
> +static void
> +vbo_validated_drawarraysindirect(struct gl_context *ctx,
> + GLenum mode, const GLvoid *indirect)
> +{
> + struct vbo_context *vbo = vbo_context(ctx);
> + struct vbo_exec_context *exec = &vbo->exec;
> + struct _mesa_prim prim[1];
> +
> + vbo_bind_arrays(ctx);
> +
> + memset(prim, 0, sizeof(prim));
> + prim[0].begin = 1;
> + prim[0].end = 1;
> + prim[0].mode = mode;
> + prim[0].indirect_offset = (GLsizeiptr)indirect;
> +
> + /* NOTE: We do NOT want to handle primitive restart here, nor perform any
> + * other checks that require knowledge of the values in the command
> buffer.
> + * That would deafeat the whole purpose of this function.
> + */
> +
> + check_buffers_are_unmapped(exec->array.inputs);
> + vbo->draw_prims(ctx, prim, 1,
> + NULL, GL_TRUE, 0, ~0,
> + NULL,
> + ctx->DrawIndirectBuffer);
> +
> + if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH)
> + _mesa_flush(ctx);
> +}
> +
> +static void
> +vbo_validated_multidrawarraysindirect(struct gl_context *ctx,
> + GLenum mode,
> + const GLvoid *indirect,
> + GLsizei primcount, GLsizei stride)
> +{
> + struct vbo_context *vbo = vbo_context(ctx);
> + struct vbo_exec_context *exec = &vbo->exec;
> + struct _mesa_prim *prim;
> + GLsizei i;
> + GLsizeiptr offset = (GLsizeiptr)indirect;
> +
> + if (primcount == 0)
> + return;
> + prim = calloc(1, primcount * sizeof(*prim));
prim = calloc(primcount, sizeof(*prim));
because primcount could be 0x7fffffff, and that would overflow on 32-bit
leading to sadness. calloc will do the right thing.
> + if (prim == NULL) {
> + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glMultiDrawArraysIndirect");
> + return;
> + }
> +
> + vbo_bind_arrays(ctx);
> +
> + memset(prim, 0, primcount * sizeof(*prim));
But you used calloc. :(
> + prim[0].begin = 1;
> + prim[primcount - 1].end = 1;
> + for (i = 0; i < primcount; ++i, offset += stride) {
> + prim[i].mode = mode;
> + prim[i].indirect_offset = offset;
> + }
> +
> + check_buffers_are_unmapped(exec->array.inputs);
> + vbo->draw_prims(ctx, prim, primcount,
> + NULL, GL_TRUE, 0, ~0,
> + NULL,
> + ctx->DrawIndirectBuffer);
> +
> + free(prim);
> +
> + if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH)
> + _mesa_flush(ctx);
> +}
> +
> +static void
> +vbo_validated_drawelementsindirect(struct gl_context *ctx,
> + GLenum mode, GLenum type,
> + const GLvoid *indirect)
> +{
> + struct vbo_context *vbo = vbo_context(ctx);
> + struct vbo_exec_context *exec = &vbo->exec;
> + struct _mesa_index_buffer ib;
> + struct _mesa_prim prim[1];
> +
> + vbo_bind_arrays(ctx);
> +
> + ib.count = 0; /* unknown */
> + ib.type = type;
> + ib.obj = ctx->Array.ArrayObj->ElementArrayBufferObj;
> + ib.ptr = NULL;
> +
> + memset(prim, 0, sizeof(prim));
> + prim[0].begin = 1;
> + prim[0].end = 1;
> + prim[0].mode = mode;
> + prim[0].indexed = 1;
> + prim[0].indirect_offset = (GLsizeiptr)indirect;
> +
> + check_buffers_are_unmapped(exec->array.inputs);
> + vbo->draw_prims(ctx, prim, 1,
> + &ib, GL_TRUE, 0, ~0,
> + NULL,
> + ctx->DrawIndirectBuffer);
> +
> + if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH)
> + _mesa_flush(ctx);
> +}
> +
> +static void
> +vbo_validated_multidrawelementsindirect(struct gl_context *ctx,
> + GLenum mode, GLenum type,
> + const GLvoid *indirect,
> + GLsizei primcount, GLsizei stride)
> +{
> + struct vbo_context *vbo = vbo_context(ctx);
> + struct vbo_exec_context *exec = &vbo->exec;
> + struct _mesa_index_buffer ib;
> + struct _mesa_prim *prim;
> + GLsizei i;
> + GLsizeiptr offset = (GLsizeiptr)indirect;
> +
> + if (primcount == 0)
> + return;
> + prim = calloc(1, primcount * sizeof(*prim));
Same here.
> + if (prim == NULL) {
> + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glMultiDrawElementsIndirect");
> + return;
> + }
> +
> + vbo_bind_arrays(ctx);
> +
> + /* NOTE: ElementArrayBufferObj is guaranteed to be a VBO. */
> +
> + ib.count = 0; /* unknown */
> + ib.type = type;
> + ib.obj = ctx->Array.ArrayObj->ElementArrayBufferObj;
> + ib.ptr = NULL;
> +
> + memset(prim, 0, primcount * sizeof(*prim));
Same here.
> + prim[0].begin = 1;
> + prim[primcount - 1].end = 1;
> + for (i = 0; i < primcount; ++i, offset += stride) {
> + prim[i].mode = mode;
> + prim[i].indexed = 1;
> + prim[i].indirect_offset = offset;
> + }
> +
> + check_buffers_are_unmapped(exec->array.inputs);
> + vbo->draw_prims(ctx, prim, primcount,
> + &ib, GL_TRUE, 0, ~0,
> + NULL,
> + ctx->DrawIndirectBuffer);
> +
> + free(prim);
> +
> + if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH)
> + _mesa_flush(ctx);
> +}
> +
> /**
> * Like [Multi]DrawArrays/Elements, but they take most arguments from
> * a buffer object.
> @@ -1571,12 +1729,33 @@ vbo_exec_DrawTransformFeedbackStreamInstanced(GLenum
> mode, GLuint name,
> static void GLAPIENTRY
> vbo_exec_DrawArraysIndirect(GLenum mode, const GLvoid *indirect)
> {
> + GET_CURRENT_CONTEXT(ctx);
> +
> + if (MESA_VERBOSE & VERBOSE_DRAW)
> + _mesa_debug(ctx, "glDrawArraysIndirect(%s, %p)\n",
> + _mesa_lookup_enum_by_nr(mode), indirect);
> +
> + if (!_mesa_validate_DrawArraysIndirect(ctx, mode, indirect))
> + return;
> +
> + vbo_validated_drawarraysindirect(ctx, mode, indirect);
> }
>
> static void GLAPIENTRY
> vbo_exec_DrawElementsIndirect(GLenum mode, GLenum type,
> const GLvoid *indirect)
> {
> + GET_CURRENT_CONTEXT(ctx);
> +
> + if (MESA_VERBOSE & VERBOSE_DRAW)
> + _mesa_debug(ctx, "glDrawElementsIndirect(%s, %s, %p)\n",
> + _mesa_lookup_enum_by_nr(mode),
> + _mesa_lookup_enum_by_nr(type), indirect);
> +
> + if (!_mesa_validate_DrawElementsIndirect(ctx, mode, type, indirect))
> + return;
> +
> + vbo_validated_drawelementsindirect(ctx, mode, type, indirect);
> }
>
> static void GLAPIENTRY
> @@ -1584,6 +1763,24 @@ vbo_exec_MultiDrawArraysIndirect(GLenum mode,
> const GLvoid *indirect,
> GLsizei primcount, GLsizei stride)
> {
> + GET_CURRENT_CONTEXT(ctx);
> +
> + if (MESA_VERBOSE & VERBOSE_DRAW)
> + _mesa_debug(ctx, "glMultiDrawArraysIndirect(%s, %p, %i, %i)\n",
> + _mesa_lookup_enum_by_nr(mode), indirect, primcount,
> stride);
> +
> + /* If <stride> is zero, the array elements are treated as tightly packed.
> */
> + if (stride == 0)
> + stride = 4 * sizeof(GLuint); /* sizeof(DrawArraysIndirectCommand) */
> +
> + if (!_mesa_validate_MultiDrawArraysIndirect(ctx, mode,
> + indirect,
> + primcount, stride))
> + return;
> +
> + vbo_validated_multidrawarraysindirect(ctx, mode,
> + indirect,
> + primcount, stride);
> }
>
> static void GLAPIENTRY
> @@ -1591,6 +1788,25 @@ vbo_exec_MultiDrawElementsIndirect(GLenum mode, GLenum
> type,
> const GLvoid *indirect,
> GLsizei primcount, GLsizei stride)
> {
> + GET_CURRENT_CONTEXT(ctx);
> +
> + if (MESA_VERBOSE & VERBOSE_DRAW)
> + _mesa_debug(ctx, "glMultiDrawElementsIndirect(%s, %s, %p, %i, %i)\n",
> + _mesa_lookup_enum_by_nr(mode),
> + _mesa_lookup_enum_by_nr(type), indirect, primcount,
> stride);
> +
> + /* If <stride> is zero, the array elements are treated as tightly packed.
> */
> + if (stride == 0)
> + stride = 5 * sizeof(GLuint); /* sizeof(DrawElementsIndirectCommand) */
> +
> + if (!_mesa_validate_MultiDrawElementsIndirect(ctx, mode, type,
> + indirect,
> + primcount, stride))
> + return;
> +
> + vbo_validated_multidrawelementsindirect(ctx, mode, type,
> + indirect,
> + primcount, stride);
> }
>
> /**
>
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