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[g3dvl] move idct stage 1 scaling into matrix

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This commit is contained in:
Christian König 2010-12-10 11:31:17 +01:00
parent 680f118138
commit 4a8420513d
1 changed files with 8 additions and 7 deletions
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15
src/gallium/auxiliary/vl/vl_idct.c
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@ -43,7 +43,7 @@
#define SCALE_FACTOR_16_TO_9 (32768.0f / 256.0f)
#define STAGE1_SCALE 4.0f
#define STAGE2_SCALE (SCALE_FACTOR_16_TO_9 / STAGE1_SCALE)
#define STAGE2_SCALE (SCALE_FACTOR_16_TO_9 / STAGE1_SCALE / STAGE1_SCALE)
#define NR_RENDER_TARGETS 4
@ -273,14 +273,14 @@ create_matrix_frag_shader(struct vl_idct *idct)
for (i = 0; i < NR_RENDER_TARGETS; ++i)
fragment[i] = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, i);
ureg_MOV(shader, ureg_writemask(t_tc, TGSI_WRITEMASK_Y), tex);
for (i = 0; i < 4; ++i) {
fetch_four(shader, l[i], ureg_src(t_tc), sampler[0], start[0], block, false, false, idct->buffer_width / 4);
ureg_MUL(shader, l[i][0], ureg_src(l[i][0]), ureg_imm1f(shader, STAGE1_SCALE));
ureg_MUL(shader, l[i][1], ureg_src(l[i][1]), ureg_imm1f(shader, STAGE1_SCALE));
if(i != 3)
if(i == 0)
ureg_MOV(shader, ureg_writemask(t_tc, TGSI_WRITEMASK_Y), tex);
else
ureg_ADD(shader, ureg_writemask(t_tc, TGSI_WRITEMASK_Y),
ureg_src(t_tc), ureg_imm1f(shader, 1.0f / idct->buffer_height));
fetch_four(shader, l[i], ureg_src(t_tc), sampler[0], start[0], block, false, false, idct->buffer_width / 4);
}
for (i = 0; i < NR_RENDER_TARGETS; ++i) {
@ -530,7 +530,8 @@ vl_idct_upload_matrix(struct pipe_context *pipe)
f = pipe->transfer_map(pipe, buf_transfer);
for(i = 0; i < BLOCK_HEIGHT; ++i)
for(j = 0; j < BLOCK_WIDTH; ++j)
f[i * pitch + j] = const_matrix[j][i]; // transpose
// transpose and scale
f[i * pitch + j] = const_matrix[j][i] * STAGE1_SCALE;
pipe->transfer_unmap(pipe, buf_transfer);
pipe->transfer_destroy(pipe, buf_transfer);