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[g3dvl] again rework vertex shader a bit

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This commit is contained in:
Christian König 2010-11-10 15:24:28 +01:00
parent 1eade3271a
commit c2ec28be3a
1 changed files with 34 additions and 17 deletions
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51
src/gallium/auxiliary/vl/vl_mpeg12_mc_renderer.c
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@ -84,9 +84,10 @@ create_vert_shader(struct vl_mpeg12_mc_renderer *r, unsigned ref_frames, unsigne
struct ureg_program *shader;
struct ureg_src norm, mbs;
struct ureg_src vpos, vtex[3], vmv[4];
struct ureg_dst tmp;
struct ureg_dst t_vpos, scale;
struct ureg_dst o_vpos, o_vtex[3], o_vmv[4], o_line;
unsigned i, j, count;
bool interlaced = mv_per_frame == 2;
shader = ureg_create(TGSI_PROCESSOR_VERTEX);
if (!shader)
@ -94,7 +95,9 @@ create_vert_shader(struct vl_mpeg12_mc_renderer *r, unsigned ref_frames, unsigne
norm = ureg_DECL_constant(shader, 0);
mbs = ureg_imm2f(shader, MACROBLOCK_WIDTH, MACROBLOCK_HEIGHT);
tmp = ureg_DECL_temporary(shader);
t_vpos = ureg_DECL_temporary(shader);
scale = ureg_DECL_temporary(shader);
vpos = ureg_DECL_vs_input(shader, 0);
o_vpos = ureg_DECL_output(shader, TGSI_SEMANTIC_POSITION, 0);
@ -121,33 +124,47 @@ create_vert_shader(struct vl_mpeg12_mc_renderer *r, unsigned ref_frames, unsigne
o_line = ureg_DECL_output(shader, TGSI_SEMANTIC_GENERIC, 4 + count);
/*
* o_vpos = vpos * norm * mbs
* o_vtex[0..2] = vtex[0..2] * norm * mbs
* o_vmv[0..count] = o_vpos + vmv[0..4] * norm * 0.5 // Apply motion vector
* o_line.x = 1
* o_line.y = vpos.y * 8
* scale = norm * mbs;
*
* t_vpos = vpos * scale
* o_vpos = t_vpos
*
* o_vtex[0..2] = vtex[0..2] * scale
*
* if(count > 0) { // Apply motion vectors
* scale = norm * 0.5;
* o_vmv[0..count] = t_vpos + vmv[0..4] * scale
* }
*
* if(interlaced) {
* o_line.x = 1
* o_line.y = vpos.y * 8
* }
*/
ureg_MUL(shader, ureg_writemask(tmp, TGSI_WRITEMASK_XY), vpos, mbs);
ureg_MUL(shader, ureg_writemask(o_vpos, TGSI_WRITEMASK_XY), ureg_src(tmp), norm);
ureg_MUL(shader, ureg_writemask(scale, TGSI_WRITEMASK_XY), norm, mbs);
ureg_MUL(shader, ureg_writemask(t_vpos, TGSI_WRITEMASK_XY), vpos, ureg_src(scale));
ureg_MOV(shader, ureg_writemask(o_vpos, TGSI_WRITEMASK_XY), ureg_src(t_vpos));
ureg_MOV(shader, ureg_writemask(o_vpos, TGSI_WRITEMASK_ZW), vpos);
for (i = 0; i < 3; ++i) {
ureg_MUL(shader, ureg_writemask(tmp, TGSI_WRITEMASK_XY), vtex[i], mbs);
ureg_MUL(shader, ureg_writemask(o_vtex[i], TGSI_WRITEMASK_XY), ureg_src(tmp), norm);
ureg_MUL(shader, ureg_writemask(o_vtex[i], TGSI_WRITEMASK_XY), vtex[i], ureg_src(scale));
}
for (i = 0; i < count; ++i) {
ureg_MUL(shader, ureg_writemask(tmp, TGSI_WRITEMASK_XY), vmv[i],
ureg_scalar(ureg_imm1f(shader, 0.5f), TGSI_SWIZZLE_X));
ureg_MAD(shader, ureg_writemask(o_vmv[i], TGSI_WRITEMASK_XY), ureg_src(tmp), norm, ureg_src(o_vpos));
if(count > 0) {
ureg_MUL(shader, ureg_writemask(scale, TGSI_WRITEMASK_XY), norm, ureg_imm1f(shader, 0.5f));
for (i = 0; i < count; ++i)
ureg_MAD(shader, ureg_writemask(o_vmv[i], TGSI_WRITEMASK_XY), ureg_src(scale), vmv[i], ureg_src(t_vpos));
}
if (mv_per_frame == 2) {
if (interlaced) {
ureg_MOV(shader, ureg_writemask(o_line, TGSI_WRITEMASK_X), ureg_imm1f(shader, 1.0f));
ureg_MUL(shader, ureg_writemask(o_line, TGSI_WRITEMASK_Y), vpos, ureg_imm1f(shader, MACROBLOCK_HEIGHT / 2));
}
ureg_release_temporary(shader, tmp);
ureg_release_temporary(shader, t_vpos);
ureg_release_temporary(shader, scale);
ureg_END(shader);
return ureg_create_shader_and_destroy(shader, r->pipe);