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Cleanups to deferred shading workload

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This commit is contained in:
Matt Pharr
2011-09-30 20:35:42 -07:00
parent 9de34eb22c
commit 65c50b60fc
5 changed files with 87 additions and 49 deletions
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32
examples/deferred/kernels.ispc
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@@ -479,7 +479,7 @@ ShadeTile(
// Static decomposition
task void
RenderTile(uniform int g, uniform int num_groups_x, uniform int num_groups_y,
RenderTile(uniform int num_groups_x, uniform int num_groups_y,
reference uniform InputHeader inputHeader,
reference uniform InputDataArrays inputData,
uniform int visualizeLightCount,
@@ -487,16 +487,13 @@ RenderTile(uniform int g, uniform int num_groups_x, uniform int num_groups_y,
reference uniform unsigned int8 framebuffer_r[],
reference uniform unsigned int8 framebuffer_g[],
reference uniform unsigned int8 framebuffer_b[]) {
uniform int32 group_y = g / num_groups_x;
uniform int32 group_x = g % num_groups_x;
uniform int32 group_y = taskIndex / num_groups_x;
uniform int32 group_x = taskIndex % num_groups_x;
uniform int32 tile_start_x = group_x * MIN_TILE_WIDTH;
uniform int32 tile_start_y = group_y * MIN_TILE_HEIGHT;
uniform int32 tile_end_x = tile_start_x + MIN_TILE_WIDTH;
uniform int32 tile_end_y = tile_start_y + MIN_TILE_HEIGHT;
uniform int sTileNumLights = 0;
uniform int sTileLightIndices[MAX_LIGHTS]; // Light list for the tile
uniform int framebufferWidth = inputHeader.framebufferWidth;
uniform int framebufferHeight = inputHeader.framebufferHeight;
uniform float cameraProj_00 = inputHeader.cameraProj[0][0];
@@ -504,8 +501,9 @@ RenderTile(uniform int g, uniform int num_groups_x, uniform int num_groups_y,
uniform float cameraProj_22 = inputHeader.cameraProj[2][2];
uniform float cameraProj_32 = inputHeader.cameraProj[3][2];
// Light intersection
sTileNumLights =
// Light intersection: figure out which lights illuminate this tile.
uniform int tileLightIndices[MAX_LIGHTS]; // Light list for the tile
uniform int numTileLights =
IntersectLightsWithTile(tile_start_x, tile_end_x,
tile_start_y, tile_end_y,
framebufferWidth, framebufferHeight,
@@ -518,12 +516,13 @@ RenderTile(uniform int g, uniform int num_groups_x, uniform int num_groups_y,
inputData.lightPositionView_y,
inputData.lightPositionView_z,
inputData.lightAttenuationEnd,
sTileLightIndices);
tileLightIndices);
// And now shade the tile, using the lights in tileLightIndices
ShadeTile(tile_start_x, tile_end_x, tile_start_y, tile_end_y,
framebufferWidth, framebufferHeight, inputData,
cameraProj_00, cameraProj_11, cameraProj_22, cameraProj_32,
sTileLightIndices, sTileNumLights, visualizeLightCount,
tileLightIndices, numTileLights, visualizeLightCount,
framebuffer_r, framebuffer_g, framebuffer_b);
}
@@ -542,17 +541,19 @@ RenderStatic(reference uniform InputHeader inputHeader,
MIN_TILE_HEIGHT - 1) / MIN_TILE_HEIGHT;
uniform int num_groups = num_groups_x * num_groups_y;
for (uniform int g = 0; g < num_groups; ++g)
launch < RenderTile(g, num_groups_x, num_groups_y,
inputHeader, inputData, visualizeLightCount,
framebuffer_r, framebuffer_g, framebuffer_b) >;
// Launch a task to render each tile, each of which is MIN_TILE_WIDTH
// by MIN_TILE_HEIGHT pixels.
launch[num_groups] < RenderTile(num_groups_x, num_groups_y,
inputHeader, inputData, visualizeLightCount,
framebuffer_r, framebuffer_g, framebuffer_b) >;
}
///////////////////////////////////////////////////////////////////////////
// Routines for dynamic decomposition path
// tile width must be a multiple of programCount (SIMD size)
// This computes the z min/max range for a whole row worth of tiles.
// The tile width must be a multiple of programCount (SIMD size)
export void
ComputeZBoundsRow(
uniform int32 tileY,
@@ -583,6 +584,7 @@ ComputeZBoundsRow(
}
// Reclassifies the lights with respect to four sub-tiles when we refine a tile.
// numLights need not be a multiple of programCount here, but the input and output arrays
// should be able to handle programCount-sized load/stores.
export void