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llvmpipe: implement instanced drawing functions

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And express all the other drawing functions in terms of
llvmpipe_draw_range_elements_instanced().
This commit is contained in:
Brian Paul
2010-07-15 15:47:03 -06:00
parent 839608a8be
commit 5824fbf674
1 changed files with 112 additions and 24 deletions
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src/gallium/drivers/llvmpipe/lp_draw_arrays.c
+112 -24
View File
@@ -43,18 +43,23 @@
/**
* Draw vertex arrays, with optional indexing.
* Draw vertex arrays, with optional indexing, optional instancing.
* All the other drawing functions are implemented in terms of this function.
* Basically, map the vertex buffers (and drawing surfaces), then hand off
* the drawing to the 'draw' module.
*/
static void
llvmpipe_draw_range_elements(struct pipe_context *pipe,
struct pipe_resource *indexBuffer,
unsigned indexSize,
int indexBias,
unsigned min_index,
unsigned max_index,
unsigned mode, unsigned start, unsigned count)
llvmpipe_draw_range_elements_instanced(struct pipe_context *pipe,
struct pipe_resource *indexBuffer,
unsigned indexSize,
int indexBias,
unsigned minIndex,
unsigned maxIndex,
unsigned mode,
unsigned start,
unsigned count,
unsigned startInstance,
unsigned instanceCount)
{
struct llvmpipe_context *lp = llvmpipe_context(pipe);
struct draw_context *draw = lp->draw;
@@ -74,9 +79,11 @@ llvmpipe_draw_range_elements(struct pipe_context *pipe,
/* Map index buffer, if present */
if (indexBuffer) {
void *mapped_indexes = llvmpipe_resource_data(indexBuffer);
draw_set_mapped_element_buffer_range(draw, indexSize, indexBias,
min_index,
max_index,
draw_set_mapped_element_buffer_range(draw,
indexSize,
indexBias,
minIndex,
maxIndex,
mapped_indexes);
}
else {
@@ -89,7 +96,8 @@ llvmpipe_draw_range_elements(struct pipe_context *pipe,
lp->vertex_sampler_views);
/* draw! */
draw_arrays(draw, mode, start, count);
draw_arrays_instanced(draw, mode, start, count,
startInstance, instanceCount);
/*
* unmap vertex/index buffers
@@ -112,24 +120,102 @@ llvmpipe_draw_range_elements(struct pipe_context *pipe,
static void
llvmpipe_draw_elements(struct pipe_context *pipe,
struct pipe_resource *indexBuffer,
unsigned indexSize,
int indexBias,
unsigned mode, unsigned start, unsigned count)
llvmpipe_draw_arrays_instanced(struct pipe_context *pipe,
unsigned mode,
unsigned start,
unsigned count,
unsigned startInstance,
unsigned instanceCount)
{
llvmpipe_draw_range_elements( pipe, indexBuffer,
indexSize, indexBias,
0, 0xffffffff,
mode, start, count );
llvmpipe_draw_range_elements_instanced(pipe,
NULL, /* no indexBuffer */
0, 0, /* indexSize, indexBias */
0, ~0, /* minIndex, maxIndex */
mode,
start,
count,
startInstance,
instanceCount);
}
static void
llvmpipe_draw_arrays(struct pipe_context *pipe, unsigned mode,
unsigned start, unsigned count)
llvmpipe_draw_elements_instanced(struct pipe_context *pipe,
struct pipe_resource *indexBuffer,
unsigned indexSize,
int indexBias,
unsigned mode,
unsigned start,
unsigned count,
unsigned startInstance,
unsigned instanceCount)
{
llvmpipe_draw_elements(pipe, NULL, 0, 0, mode, start, count);
llvmpipe_draw_range_elements_instanced(pipe,
indexBuffer,
indexSize, indexBias,
0, ~0, /* minIndex, maxIndex */
mode,
start,
count,
startInstance,
instanceCount);
}
static void
llvmpipe_draw_elements(struct pipe_context *pipe,
struct pipe_resource *indexBuffer,
unsigned indexSize,
int indexBias,
unsigned mode,
unsigned start,
unsigned count)
{
llvmpipe_draw_range_elements_instanced(pipe,
indexBuffer,
indexSize, indexBias,
0, 0xffffffff, /* min, maxIndex */
mode, start, count,
0, /* startInstance */
1); /* instanceCount */
}
static void
llvmpipe_draw_range_elements(struct pipe_context *pipe,
struct pipe_resource *indexBuffer,
unsigned indexSize,
int indexBias,
unsigned min_index,
unsigned max_index,
unsigned mode,
unsigned start,
unsigned count)
{
llvmpipe_draw_range_elements_instanced(pipe,
indexBuffer,
indexSize, indexBias,
min_index, max_index,
mode, start, count,
0, /* startInstance */
1); /* instanceCount */
}
static void
llvmpipe_draw_arrays(struct pipe_context *pipe,
unsigned mode,
unsigned start,
unsigned count)
{
llvmpipe_draw_range_elements_instanced(pipe,
NULL, /* indexBuffer */
0, /* indexSize */
0, /* indexBias */
0, ~0, /* min, maxIndex */
mode, start, count,
0, /* startInstance */
1); /* instanceCount */
}
@@ -139,4 +225,6 @@ llvmpipe_init_draw_funcs(struct llvmpipe_context *llvmpipe)
llvmpipe->pipe.draw_arrays = llvmpipe_draw_arrays;
llvmpipe->pipe.draw_elements = llvmpipe_draw_elements;
llvmpipe->pipe.draw_range_elements = llvmpipe_draw_range_elements;
llvmpipe->pipe.draw_arrays_instanced = llvmpipe_draw_arrays_instanced;
llvmpipe->pipe.draw_elements_instanced = llvmpipe_draw_elements_instanced;
}