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i965: Set up the per-render-target blend state on gen6.

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This will let us get EXT_draw_buffers2 blending and colormasking working.
This commit is contained in:
Eric Anholt
2010-12-08 10:12:20 -08:00
parent 0d3b8a5cc2
commit 4b4dc778b6
1 changed files with 48 additions and 45 deletions
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src/mesa/drivers/dri/i965/gen6_cc.c
+48 -45
View File
@@ -35,7 +35,7 @@
struct gen6_blend_state_key {
GLboolean color_blend, alpha_enabled;
GLboolean dither;
GLboolean color_mask[4];
GLboolean color_mask[BRW_MAX_DRAW_BUFFERS][4];
GLenum logic_op;
@@ -55,7 +55,7 @@ blend_state_populate_key(struct brw_context *brw,
memset(key, 0, sizeof(*key));
/* _NEW_COLOR */
memcpy(key->color_mask, ctx->Color.ColorMask[0], sizeof(key->color_mask));
memcpy(key->color_mask, ctx->Color.ColorMask, sizeof(key->color_mask));
/* _NEW_COLOR */
if (ctx->Color._LogicOpEnabled)
@@ -91,61 +91,64 @@ static drm_intel_bo *
blend_state_create_from_key(struct brw_context *brw,
struct gen6_blend_state_key *key)
{
struct gen6_blend_state blend;
struct gen6_blend_state blend[BRW_MAX_DRAW_BUFFERS];
drm_intel_bo *bo;
int b;
memset(&blend, 0, sizeof(blend));
if (key->logic_op != GL_COPY) {
blend.blend1.logic_op_enable = 1;
blend.blend1.logic_op_func = intel_translate_logic_op(key->logic_op);
} else if (key->color_blend) {
GLenum eqRGB = key->blend_eq_rgb;
GLenum eqA = key->blend_eq_a;
GLenum srcRGB = key->blend_src_rgb;
GLenum dstRGB = key->blend_dst_rgb;
GLenum srcA = key->blend_src_a;
GLenum dstA = key->blend_dst_a;
for (b = 0; b < BRW_MAX_DRAW_BUFFERS; b++) {
if (key->logic_op != GL_COPY) {
blend[b].blend1.logic_op_enable = 1;
blend[b].blend1.logic_op_func = intel_translate_logic_op(key->logic_op);
} else if (key->color_blend & (1 << b)) {
GLenum eqRGB = key->blend_eq_rgb;
GLenum eqA = key->blend_eq_a;
GLenum srcRGB = key->blend_src_rgb;
GLenum dstRGB = key->blend_dst_rgb;
GLenum srcA = key->blend_src_a;
GLenum dstA = key->blend_dst_a;
if (eqRGB == GL_MIN || eqRGB == GL_MAX) {
srcRGB = dstRGB = GL_ONE;
if (eqRGB == GL_MIN || eqRGB == GL_MAX) {
srcRGB = dstRGB = GL_ONE;
}
if (eqA == GL_MIN || eqA == GL_MAX) {
srcA = dstA = GL_ONE;
}
blend[b].blend0.dest_blend_factor = brw_translate_blend_factor(dstRGB);
blend[b].blend0.source_blend_factor = brw_translate_blend_factor(srcRGB);
blend[b].blend0.blend_func = brw_translate_blend_equation(eqRGB);
blend[b].blend0.ia_dest_blend_factor = brw_translate_blend_factor(dstA);
blend[b].blend0.ia_source_blend_factor = brw_translate_blend_factor(srcA);
blend[b].blend0.ia_blend_func = brw_translate_blend_equation(eqA);
blend[b].blend0.blend_enable = 1;
blend[b].blend0.ia_blend_enable = (srcA != srcRGB ||
dstA != dstRGB ||
eqA != eqRGB);
}
if (eqA == GL_MIN || eqA == GL_MAX) {
srcA = dstA = GL_ONE;
if (key->alpha_enabled) {
blend[b].blend1.alpha_test_enable = 1;
blend[b].blend1.alpha_test_func = intel_translate_compare_func(key->alpha_func);
}
blend.blend0.dest_blend_factor = brw_translate_blend_factor(dstRGB);
blend.blend0.source_blend_factor = brw_translate_blend_factor(srcRGB);
blend.blend0.blend_func = brw_translate_blend_equation(eqRGB);
if (key->dither) {
blend[b].blend1.dither_enable = 1;
blend[b].blend1.y_dither_offset = 0;
blend[b].blend1.x_dither_offset = 0;
}
blend.blend0.ia_dest_blend_factor = brw_translate_blend_factor(dstA);
blend.blend0.ia_source_blend_factor = brw_translate_blend_factor(srcA);
blend.blend0.ia_blend_func = brw_translate_blend_equation(eqA);
blend.blend0.blend_enable = 1;
blend.blend0.ia_blend_enable = (srcA != srcRGB ||
dstA != dstRGB ||
eqA != eqRGB);
blend[b].blend1.write_disable_r = !key->color_mask[b][0];
blend[b].blend1.write_disable_g = !key->color_mask[b][1];
blend[b].blend1.write_disable_b = !key->color_mask[b][2];
blend[b].blend1.write_disable_a = !key->color_mask[b][3];
}
if (key->alpha_enabled) {
blend.blend1.alpha_test_enable = 1;
blend.blend1.alpha_test_func = intel_translate_compare_func(key->alpha_func);
}
if (key->dither) {
blend.blend1.dither_enable = 1;
blend.blend1.y_dither_offset = 0;
blend.blend1.x_dither_offset = 0;
}
blend.blend1.write_disable_r = !key->color_mask[0];
blend.blend1.write_disable_g = !key->color_mask[1];
blend.blend1.write_disable_b = !key->color_mask[2];
blend.blend1.write_disable_a = !key->color_mask[3];
bo = brw_upload_cache(&brw->cache, BRW_BLEND_STATE,
key, sizeof(*key),
NULL, 0,