+/**
+ * Generate SPE code to implement the given blend mode for a quad of pixels.
+ * \param f SPE function to append instruction onto.
+ * \param fragR_reg register with fragment red values (float) (in/out)
+ * \param fragG_reg register with fragment green values (float) (in/out)
+ * \param fragB_reg register with fragment blue values (float) (in/out)
+ * \param fragA_reg register with fragment alpha values (float) (in/out)
+ * \param fbRGBA_reg register with packed framebuffer colors (integer) (in)
+ */
+static void
+gen_blend(const struct pipe_blend_state *blend,
+ struct spe_function *f,
+ enum pipe_format color_format,
+ int fragR_reg, int fragG_reg, int fragB_reg, int fragA_reg,
+ int fbRGBA_reg)
+{
+ int term1R_reg = spe_allocate_available_register(f);
+ int term1G_reg = spe_allocate_available_register(f);
+ int term1B_reg = spe_allocate_available_register(f);
+ int term1A_reg = spe_allocate_available_register(f);
+
+ int term2R_reg = spe_allocate_available_register(f);
+ int term2G_reg = spe_allocate_available_register(f);
+ int term2B_reg = spe_allocate_available_register(f);
+ int term2A_reg = spe_allocate_available_register(f);
+
+ int fbR_reg = spe_allocate_available_register(f);
+ int fbG_reg = spe_allocate_available_register(f);
+ int fbB_reg = spe_allocate_available_register(f);
+ int fbA_reg = spe_allocate_available_register(f);
+
+ int one_reg = spe_allocate_available_register(f);
+ int tmp_reg = spe_allocate_available_register(f);
+
+ ASSERT(blend->blend_enable);
+
+ /* Unpack/convert framebuffer colors from four 32-bit packed colors
+ * (fbRGBA) to four float RGBA vectors (fbR, fbG, fbB, fbA).
+ * Each 8-bit color component is expanded into a float in [0.0, 1.0].
+ */
+ {
+ int mask_reg = spe_allocate_available_register(f);
+
+ /* mask = {0x000000ff, 0x000000ff, 0x000000ff, 0x000000ff} */
+ spe_fsmbi(f, mask_reg, 0x1111);
+
+ /* XXX there may be more clever ways to implement the following code */
+ switch (color_format) {
+ case PIPE_FORMAT_A8R8G8B8_UNORM:
+ /* fbB = fbB & mask */
+ spe_and(f, fbB_reg, fbRGBA_reg, mask_reg);
+ /* mask = mask << 8 */
+ spe_roti(f, mask_reg, mask_reg, 8);
+
+ /* fbG = fbRGBA & mask */
+ spe_and(f, fbB_reg, fbRGBA_reg, mask_reg);
+ /* fbG = fbG >> 8 */
+ spe_roti(f, fbB_reg, fbB_reg, -8);
+ /* mask = mask << 8 */
+ spe_roti(f, mask_reg, mask_reg, 8);
+
+ /* fbR = fbRGBA & mask */
+ spe_and(f, fbR_reg, fbRGBA_reg, mask_reg);
+ /* fbR = fbR >> 16 */
+ spe_roti(f, fbB_reg, fbB_reg, -16);
+ /* mask = mask << 8 */
+ spe_roti(f, mask_reg, mask_reg, 8);
+
+ /* fbA = fbRGBA & mask */
+ spe_and(f, fbA_reg, fbRGBA_reg, mask_reg);
+ /* fbA = fbA >> 24 */
+ spe_roti(f, fbA_reg, fbA_reg, -24);
+ break;
+
+ case PIPE_FORMAT_B8G8R8A8_UNORM:
+ /* fbA = fbA & mask */
+ spe_and(f, fbA_reg, fbRGBA_reg, mask_reg);
+ /* mask = mask << 8 */
+ spe_roti(f, mask_reg, mask_reg, 8);
+
+ /* fbR = fbRGBA & mask */
+ spe_and(f, fbR_reg, fbRGBA_reg, mask_reg);
+ /* fbR = fbR >> 8 */
+ spe_roti(f, fbR_reg, fbR_reg, -8);
+ /* mask = mask << 8 */
+ spe_roti(f, mask_reg, mask_reg, 8);
+
+ /* fbG = fbRGBA & mask */
+ spe_and(f, fbG_reg, fbRGBA_reg, mask_reg);
+ /* fbG = fbG >> 16 */
+ spe_roti(f, fbG_reg, fbG_reg, -16);
+ /* mask = mask << 8 */
+ spe_roti(f, mask_reg, mask_reg, 8);
+
+ /* fbB = fbRGBA & mask */
+ spe_and(f, fbB_reg, fbRGBA_reg, mask_reg);
+ /* fbB = fbB >> 24 */
+ spe_roti(f, fbB_reg, fbB_reg, -24);
+ break;
+
+ default:
+ ASSERT(0);
+ }
+
+ /* convert int[4] in [0,255] to float[4] in [0.0, 1.0] */
+ spe_cuflt(f, fbR_reg, fbR_reg, 8);
+ spe_cuflt(f, fbG_reg, fbG_reg, 8);
+ spe_cuflt(f, fbB_reg, fbB_reg, 8);
+ spe_cuflt(f, fbA_reg, fbA_reg, 8);
+
+ spe_release_register(f, mask_reg);
+ }
+
+
+ /*
+ * Compute Src RGB terms
+ */
+ switch (blend->rgb_src_factor) {
+ case PIPE_BLENDFACTOR_ONE:
+ spe_move(f, term1R_reg, fragR_reg);
+ spe_move(f, term1G_reg, fragG_reg);
+ spe_move(f, term1B_reg, fragB_reg);
+ break;
+ case PIPE_BLENDFACTOR_ZERO:
+ spe_zero(f, term1R_reg);
+ spe_zero(f, term1G_reg);
+ spe_zero(f, term1B_reg);
+ break;
+ case PIPE_BLENDFACTOR_SRC_COLOR:
+ spe_fm(f, term1R_reg, fragR_reg, fragR_reg);
+ spe_fm(f, term1G_reg, fragG_reg, fragG_reg);
+ spe_fm(f, term1B_reg, fragB_reg, fragB_reg);
+ break;
+ case PIPE_BLENDFACTOR_SRC_ALPHA:
+ spe_fm(f, term1R_reg, fragR_reg, fragA_reg);
+ spe_fm(f, term1G_reg, fragG_reg, fragA_reg);
+ spe_fm(f, term1B_reg, fragB_reg, fragA_reg);
+ break;
+ /* XXX more cases */
+ default:
+ ASSERT(0);
+ }
+
+ /*
+ * Compute Src Alpha term
+ */
+ switch (blend->alpha_src_factor) {
+ case PIPE_BLENDFACTOR_ONE:
+ spe_move(f, term1A_reg, fragA_reg);
+ break;
+ case PIPE_BLENDFACTOR_SRC_COLOR:
+ spe_fm(f, term1A_reg, fragA_reg, fragA_reg);
+ break;
+ case PIPE_BLENDFACTOR_SRC_ALPHA:
+ spe_fm(f, term1A_reg, fragA_reg, fragA_reg);
+ break;
+ /* XXX more cases */
+ default:
+ ASSERT(0);
+ }
+
+ /*
+ * Compute Dest RGB terms
+ */
+ switch (blend->rgb_dst_factor) {
+ case PIPE_BLENDFACTOR_ONE:
+ spe_move(f, term2R_reg, fbR_reg);
+ spe_move(f, term2G_reg, fbG_reg);
+ spe_move(f, term2B_reg, fbB_reg);
+ break;
+ case PIPE_BLENDFACTOR_ZERO:
+ spe_zero(f, term2R_reg);
+ spe_zero(f, term2G_reg);
+ spe_zero(f, term2B_reg);
+ break;
+ case PIPE_BLENDFACTOR_SRC_COLOR:
+ spe_fm(f, term2R_reg, fbR_reg, fragR_reg);
+ spe_fm(f, term2G_reg, fbG_reg, fragG_reg);
+ spe_fm(f, term2B_reg, fbB_reg, fragB_reg);
+ break;
+ case PIPE_BLENDFACTOR_SRC_ALPHA:
+ spe_fm(f, term2R_reg, fbR_reg, fragA_reg);
+ spe_fm(f, term2G_reg, fbG_reg, fragA_reg);
+ spe_fm(f, term2B_reg, fbB_reg, fragA_reg);
+ break;
+ case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
+ /* one = {1.0, 1.0, 1.0, 1.0} */
+ spe_load_float(f, one_reg, 1.0f);
+ /* tmp = one - fragA */
+ spe_fs(f, tmp_reg, one_reg, fragA_reg);
+ /* term = fb * tmp */
+ spe_fm(f, term2R_reg, fbR_reg, tmp_reg);
+ spe_fm(f, term2G_reg, fbG_reg, tmp_reg);
+ spe_fm(f, term2B_reg, fbB_reg, tmp_reg);
+ break;
+ /* XXX more cases */
+ default:
+ ASSERT(0);
+ }
+
+ /*
+ * Compute Dest Alpha term
+ */
+ switch (blend->alpha_dst_factor) {
+ case PIPE_BLENDFACTOR_ONE:
+ spe_move(f, term2A_reg, fbA_reg);
+ break;
+ case PIPE_BLENDFACTOR_ZERO:
+ spe_zero(f, term2A_reg);
+ break;
+ case PIPE_BLENDFACTOR_SRC_ALPHA:
+ spe_fm(f, term2A_reg, fbA_reg, fragA_reg);
+ break;
+ case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
+ /* one = {1.0, 1.0, 1.0, 1.0} */
+ spe_load_float(f, one_reg, 1.0f);
+ /* tmp = one - fragA */
+ spe_fs(f, tmp_reg, one_reg, fragA_reg);
+ /* termA = fbA * tmp */
+ spe_fm(f, term2A_reg, fbA_reg, tmp_reg);
+ break;
+ /* XXX more cases */
+ default:
+ ASSERT(0);
+ }
+
+ /*
+ * Combine Src/Dest RGB terms
+ */
+ switch (blend->rgb_func) {
+ case PIPE_BLEND_ADD:
+ spe_fa(f, fragR_reg, term1R_reg, term2R_reg);
+ spe_fa(f, fragG_reg, term1G_reg, term2G_reg);
+ spe_fa(f, fragB_reg, term1B_reg, term2B_reg);
+ break;
+ case PIPE_BLEND_SUBTRACT:
+ spe_fs(f, fragR_reg, term1R_reg, term2R_reg);
+ spe_fs(f, fragG_reg, term1G_reg, term2G_reg);
+ spe_fs(f, fragB_reg, term1B_reg, term2B_reg);
+ break;
+ /* XXX more cases */
+ default:
+ ASSERT(0);
+ }
+
+ /*
+ * Combine Src/Dest A term
+ */
+ switch (blend->alpha_func) {
+ case PIPE_BLEND_ADD:
+ spe_fa(f, fragA_reg, term1A_reg, term2A_reg);
+ break;
+ case PIPE_BLEND_SUBTRACT:
+ spe_fs(f, fragA_reg, term1A_reg, term2A_reg);
+ break;
+ /* XXX more cases */
+ default:
+ ASSERT(0);
+ }
+
+ spe_release_register(f, term1R_reg);
+ spe_release_register(f, term1G_reg);
+ spe_release_register(f, term1B_reg);
+ spe_release_register(f, term1A_reg);
+
+ spe_release_register(f, term2R_reg);
+ spe_release_register(f, term2G_reg);
+ spe_release_register(f, term2B_reg);
+ spe_release_register(f, term2A_reg);
+
+ spe_release_register(f, fbR_reg);
+ spe_release_register(f, fbG_reg);
+ spe_release_register(f, fbB_reg);
+ spe_release_register(f, fbA_reg);
+
+ spe_release_register(f, one_reg);
+ spe_release_register(f, tmp_reg);
+}
+
+
+static void
+gen_logicop(const struct pipe_blend_state *blend,
+ struct spe_function *f,
+ int fragRGBA_reg, int fbRGBA_reg)
+{
+ /* XXX to-do */
+ /* operate on 32-bit packed pixels, not float colors */
+}
+
+
+static void
+gen_colormask(uint colormask,
+ struct spe_function *f,
+ int fragRGBA_reg, int fbRGBA_reg)
+{
+ /* XXX to-do */
+ /* operate on 32-bit packed pixels, not float colors */
+}
+
+
+
+/**
+ * Generate code to pack a quad of float colors into a four 32-bit integers.
+ *
+ * \param f SPE function to append instruction onto.
+ * \param color_format the dest color packing format
+ * \param r_reg register containing four red values (in/clobbered)
+ * \param g_reg register containing four green values (in/clobbered)
+ * \param b_reg register containing four blue values (in/clobbered)
+ * \param a_reg register containing four alpha values (in/clobbered)
+ * \param rgba_reg register to store the packed RGBA colors (out)
+ */
+static void
+gen_pack_colors(struct spe_function *f,
+ enum pipe_format color_format,
+ int r_reg, int g_reg, int b_reg, int a_reg,
+ int rgba_reg)
+{
+ /* Convert float[4] in [0.0,1.0] to int[4] in [0,~0], with clamping */
+ spe_cfltu(f, r_reg, r_reg, 32);
+ spe_cfltu(f, g_reg, g_reg, 32);
+ spe_cfltu(f, b_reg, b_reg, 32);
+ spe_cfltu(f, a_reg, a_reg, 32);
+
+ /* Shift the most significant bytes to least the significant positions.
+ * I.e.: reg = reg >> 24
+ */
+ spe_rotmi(f, r_reg, r_reg, -24);
+ spe_rotmi(f, g_reg, g_reg, -24);
+ spe_rotmi(f, b_reg, b_reg, -24);
+ spe_rotmi(f, a_reg, a_reg, -24);
+
+ /* Shift the color bytes according to the surface format */
+ if (color_format == PIPE_FORMAT_A8R8G8B8_UNORM) {
+ spe_roti(f, g_reg, g_reg, 8); /* green <<= 8 */
+ spe_roti(f, r_reg, r_reg, 16); /* red <<= 16 */
+ spe_roti(f, a_reg, a_reg, 24); /* alpha <<= 24 */
+ }
+ else if (color_format == PIPE_FORMAT_B8G8R8A8_UNORM) {
+ spe_roti(f, r_reg, r_reg, 8); /* red <<= 8 */
+ spe_roti(f, g_reg, g_reg, 16); /* green <<= 16 */
+ spe_roti(f, b_reg, b_reg, 24); /* blue <<= 24 */
+ }
+ else {
+ ASSERT(0);
+ }
+
+ /* Merge red, green, blue, alpha registers to make packed RGBA colors.
+ * Eg: after shifting according to color_format we might have:
+ * R = {0x00ff0000, 0x00110000, 0x00220000, 0x00330000}
+ * G = {0x0000ff00, 0x00004400, 0x00005500, 0x00006600}
+ * B = {0x000000ff, 0x00000077, 0x00000088, 0x00000099}
+ * A = {0xff000000, 0xaa000000, 0xbb000000, 0xcc000000}
+ * OR-ing all those together gives us four packed colors:
+ * RGBA = {0xffffffff, 0xaa114477, 0xbb225588, 0xcc336699}
+ */
+ spe_or(f, rgba_reg, r_reg, g_reg);
+ spe_or(f, rgba_reg, rgba_reg, b_reg);
+ spe_or(f, rgba_reg, rgba_reg, a_reg);
+}
+
+
+
+
/**
* Generate SPE code to implement the fragment operations (alpha test,
* depth test, stencil test, blending, colormask, and final
const struct pipe_depth_stencil_alpha_state *dsa =
&cell->depth_stencil->base;
const struct pipe_blend_state *blend = &cell->blend->base;
+ const enum pipe_format color_format = cell->framebuffer.cbufs[0]->format;
/* For SPE function calls: reg $3 = first param, $4 = second param, etc. */
const int x_reg = 3; /* uint */
if (blend->blend_enable) {
- /* convert packed tile colors in fbRGBA_reg to float[4] vectors */
-
- // gen_blend_code(blend, f, mask_reg, ... );
-
+ gen_blend(blend, f, color_format,
+ fragR_reg, fragG_reg, fragB_reg, fragA_reg, fbRGBA_reg);
}
-
-
/*
* Write fragment colors to framebuffer/tile.
* This involves converting the fragment colors from float[4] to the
* tile's specific format and obeying the quad/pixel mask.
*/
{
- const enum pipe_format color_format = cell->framebuffer.cbufs[0]->format;
int rgba_reg = spe_allocate_available_register(f);
- /* Convert float[4] in [0.0,1.0] to int[4] in [0,~0], with clamping */
- spe_cfltu(f, fragR_reg, fragR_reg, 32);
- spe_cfltu(f, fragG_reg, fragG_reg, 32);
- spe_cfltu(f, fragB_reg, fragB_reg, 32);
- spe_cfltu(f, fragA_reg, fragA_reg, 32);
+ /* Pack four float colors as four 32-bit int colors */
+ gen_pack_colors(f, color_format,
+ fragR_reg, fragG_reg, fragB_reg, fragA_reg,
+ rgba_reg);
- /* Shift most the significant bytes to least the significant positions.
- * I.e.: reg = reg >> 24
- */
- spe_rotmi(f, fragR_reg, fragR_reg, -24);
- spe_rotmi(f, fragG_reg, fragG_reg, -24);
- spe_rotmi(f, fragB_reg, fragB_reg, -24);
- spe_rotmi(f, fragA_reg, fragA_reg, -24);
-
- /* Shift the color bytes according to the surface format */
- if (color_format == PIPE_FORMAT_A8R8G8B8_UNORM) {
- spe_roti(f, fragG_reg, fragG_reg, 8); /* green <<= 8 */
- spe_roti(f, fragR_reg, fragR_reg, 16); /* red <<= 16 */
- spe_roti(f, fragA_reg, fragA_reg, 24); /* alpha <<= 24 */
- }
- else if (color_format == PIPE_FORMAT_B8G8R8A8_UNORM) {
- spe_roti(f, fragR_reg, fragR_reg, 8); /* red <<= 8 */
- spe_roti(f, fragG_reg, fragG_reg, 16); /* green <<= 16 */
- spe_roti(f, fragB_reg, fragB_reg, 24); /* blue <<= 24 */
+ if (blend->logicop_enable) {
+ gen_logicop(blend, f, rgba_reg, fbRGBA_reg);
}
- else {
- ASSERT(0);
+
+ if (blend->colormask != 0xf) {
+ gen_colormask(blend->colormask, f, rgba_reg, fbRGBA_reg);
}
- /* Merge red, green, blue, alpha registers to make packed RGBA colors.
- * Eg: after shifting according to color_format we might have:
- * R = {0x00ff0000, 0x00110000, 0x00220000, 0x00330000}
- * G = {0x0000ff00, 0x00004400, 0x00005500, 0x00006600}
- * B = {0x000000ff, 0x00000077, 0x00000088, 0x00000099}
- * A = {0xff000000, 0xaa000000, 0xbb000000, 0xcc000000}
- * OR-ing all those together gives us four packed colors:
- * RGBA = {0xffffffff, 0xaa114477, 0xbb225588, 0xcc336699}
- */
- spe_or(f, rgba_reg, fragR_reg, fragG_reg);
- spe_or(f, rgba_reg, rgba_reg, fragB_reg);
- spe_or(f, rgba_reg, rgba_reg, fragA_reg);
/* Mix fragment colors with framebuffer colors using the quad/pixel mask:
* if (mask[i])
/**
- * Called by rasterizer for each quad after the shader has run. This
- * is a fallback/debug function. In reality we'll use a generated
- * function produced by the PPU. But this function is useful for
+ * Called by rasterizer for each quad after the shader has run. Do
+ * all the per-fragment operations including alpha test, z test,
+ * stencil test, blend, colormask and logicops. This is a
+ * fallback/debug function. In reality we'll use a generated function
+ * produced by the PPU. But this function is useful for
* debug/validation.
*/
void
tile_t *colorTile,
tile_t *depthStencilTile,
vector float fragZ,
- vector float fragRed,
- vector float fragGreen,
- vector float fragBlue,
- vector float fragAlpha,
+ vector float fragR,
+ vector float fragG,
+ vector float fragB,
+ vector float fragA,
vector unsigned int mask)
{
- vector float frag_soa[4], frag_aos[4];
+ vector float frag_aos[4];
unsigned int c0, c1, c2, c3;
/* do alpha test */
switch (spu.depth_stencil_alpha.alpha.func) {
case PIPE_FUNC_LESS:
- amask = spu_cmpgt(ref, fragAlpha); /* mask = (fragAlpha < ref) */
+ amask = spu_cmpgt(ref, fragA); /* mask = (fragA < ref) */
break;
case PIPE_FUNC_GREATER:
- amask = spu_cmpgt(fragAlpha, ref); /* mask = (fragAlpha > ref) */
+ amask = spu_cmpgt(fragA, ref); /* mask = (fragA > ref) */
break;
case PIPE_FUNC_GEQUAL:
- amask = spu_cmpgt(ref, fragAlpha);
+ amask = spu_cmpgt(ref, fragA);
amask = spu_nor(amask, amask);
break;
case PIPE_FUNC_LEQUAL:
- amask = spu_cmpgt(fragAlpha, ref);
+ amask = spu_cmpgt(fragA, ref);
amask = spu_nor(amask, amask);
break;
case PIPE_FUNC_EQUAL:
- amask = spu_cmpeq(ref, fragAlpha);
+ amask = spu_cmpeq(ref, fragA);
break;
case PIPE_FUNC_NOTEQUAL:
- amask = spu_cmpeq(ref, fragAlpha);
+ amask = spu_cmpeq(ref, fragA);
amask = spu_nor(amask, amask);
break;
case PIPE_FUNC_ALWAYS:
}
}
- /* XXX do blending here */
+ if (spu.blend.blend_enable) {
+ vector float term1r, term1g, term1b, term1a;
+ vector float term2r, term2g, term2b, term2a;
+
+ vector float fbRGBA[4];
+
+ vector float one, tmp;
+
+ /* get colors from framebuffer */
+ {
+ vector float fc[4];
+ uint c0, c1, c2, c3;
+#if 0
+ c0 = colorTile->ui[y+0][x+0];
+ c1 = colorTile->ui[y+0][x+1];
+ c2 = colorTile->ui[y+1][x+0];
+ c3 = colorTile->ui[y+1][x+1];
+#else
+ c0 = colorTile->ui[y][x*2+0];
+ c1 = colorTile->ui[y][x*2+1];
+ c2 = colorTile->ui[y][x*2+2];
+ c3 = colorTile->ui[y][x*2+3];
+#endif
+ switch (spu.fb.color_format) {
+ case PIPE_FORMAT_B8G8R8A8_UNORM:
+ fc[0] = spu_unpack_B8G8R8A8(c0);
+ fc[1] = spu_unpack_B8G8R8A8(c1);
+ fc[2] = spu_unpack_B8G8R8A8(c2);
+ fc[3] = spu_unpack_B8G8R8A8(c3);
+ break;
+ case PIPE_FORMAT_A8R8G8B8_UNORM:
+ fc[0] = spu_unpack_A8R8G8B8(c0);
+ fc[1] = spu_unpack_A8R8G8B8(c1);
+ fc[2] = spu_unpack_A8R8G8B8(c2);
+ fc[3] = spu_unpack_A8R8G8B8(c3);
+ break;
+ default:
+ ASSERT(0);
+ }
+ _transpose_matrix4x4(fbRGBA, fc);
+ }
+
+ /*
+ * Compute Src RGB terms
+ */
+ switch (spu.blend.rgb_src_factor) {
+ case PIPE_BLENDFACTOR_ONE:
+ term1r = fragR;
+ term1g = fragG;
+ term1b = fragB;
+ break;
+ case PIPE_BLENDFACTOR_ZERO:
+ term1r =
+ term1g =
+ term1b = spu_splats(0.0f);
+ break;
+ case PIPE_BLENDFACTOR_SRC_COLOR:
+ term1r = spu_mul(fragR, fragR);
+ term1g = spu_mul(fragG, fragG);
+ term1b = spu_mul(fragB, fragB);
+ break;
+ case PIPE_BLENDFACTOR_SRC_ALPHA:
+ term1r = spu_mul(fragR, fragA);
+ term1g = spu_mul(fragG, fragA);
+ term1b = spu_mul(fragB, fragA);
+ break;
+ /* XXX more cases */
+ default:
+ ASSERT(0);
+ }
+
+ /*
+ * Compute Src Alpha term
+ */
+ switch (spu.blend.alpha_src_factor) {
+ case PIPE_BLENDFACTOR_ONE:
+ term1a = fragA;
+ break;
+ case PIPE_BLENDFACTOR_SRC_COLOR:
+ term1a = spu_splats(0.0f);
+ break;
+ case PIPE_BLENDFACTOR_SRC_ALPHA:
+ term1a = spu_mul(fragA, fragA);
+ break;
+ /* XXX more cases */
+ default:
+ ASSERT(0);
+ }
+
+ /*
+ * Compute Dest RGB terms
+ */
+ switch (spu.blend.rgb_dst_factor) {
+ case PIPE_BLENDFACTOR_ONE:
+ term2r = fragR;
+ term2g = fragG;
+ term2b = fragB;
+ break;
+ case PIPE_BLENDFACTOR_ZERO:
+ term2r =
+ term2g =
+ term2b = spu_splats(0.0f);
+ break;
+ case PIPE_BLENDFACTOR_SRC_COLOR:
+ term2r = spu_mul(fbRGBA[0], fragR);
+ term2g = spu_mul(fbRGBA[1], fragG);
+ term2b = spu_mul(fbRGBA[2], fragB);
+ break;
+ case PIPE_BLENDFACTOR_SRC_ALPHA:
+ term2r = spu_mul(fbRGBA[0], fragA);
+ term2g = spu_mul(fbRGBA[1], fragA);
+ term2b = spu_mul(fbRGBA[2], fragA);
+ break;
+ case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
+ one = spu_splats(1.0f);
+ tmp = spu_sub(one, fragA);
+ term2r = spu_mul(fbRGBA[0], tmp);
+ term2g = spu_mul(fbRGBA[1], tmp);
+ term2b = spu_mul(fbRGBA[2], tmp);
+ break;
+ /* XXX more cases */
+ default:
+ ASSERT(0);
+ }
+
+ /*
+ * Compute Dest Alpha term
+ */
+ switch (spu.blend.alpha_dst_factor) {
+ case PIPE_BLENDFACTOR_ONE:
+ term2a = fragA;
+ break;
+ case PIPE_BLENDFACTOR_SRC_COLOR:
+ term2a = spu_splats(0.0f);
+ break;
+ case PIPE_BLENDFACTOR_SRC_ALPHA:
+ term2a = spu_mul(fbRGBA[3], fragA);
+ break;
+ case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
+ one = spu_splats(1.0f);
+ tmp = spu_sub(one, fragA);
+ term2a = spu_mul(fbRGBA[3], tmp);
+ break;
+ /* XXX more cases */
+ default:
+ ASSERT(0);
+ }
+
+ /*
+ * Combine Src/Dest RGB terms
+ */
+ switch (spu.blend.rgb_func) {
+ case PIPE_BLEND_ADD:
+ fragR = spu_add(term1r, term2r);
+ fragG = spu_add(term1g, term2g);
+ fragB = spu_add(term1b, term2b);
+ break;
+ case PIPE_BLEND_SUBTRACT:
+ fragR = spu_sub(term1r, term2r);
+ fragG = spu_sub(term1g, term2g);
+ fragB = spu_sub(term1b, term2b);
+ break;
+ /* XXX more cases */
+ default:
+ ASSERT(0);
+ }
+
+ /*
+ * Combine Src/Dest A term
+ */
+ switch (spu.blend.alpha_func) {
+ case PIPE_BLEND_ADD:
+ fragA = spu_add(term1a, term2a);
+ break;
+ case PIPE_BLEND_SUBTRACT:
+ fragA = spu_sub(term1a, term2a);
+ break;
+ /* XXX more cases */
+ default:
+ ASSERT(0);
+ }
+ }
+
/* XXX do colormask test here */
#if 0
{
vector float frag_soa[4];
- frag_soa[0] = fragRed;
- frag_soa[1] = fragGreen;
- frag_soa[2] = fragBlue;
- frag_soa[3] = fragAlpha;
+ frag_soa[0] = fragR;
+ frag_soa[1] = fragG;
+ frag_soa[2] = fragB;
+ frag_soa[3] = fragA;
_transpose_matrix4x4(frag_aos, frag_soa);
}
#else
/* short-cut relying on function parameter layout: */
- _transpose_matrix4x4(frag_aos, &fragRed);
- (void) fragGreen;
- (void) fragBlue;
+ _transpose_matrix4x4(frag_aos, &fragR);
+ (void) fragG;
+ (void) fragB;
#endif
switch (spu.fb.color_format) {
if (spu_extract(mask, 2))
colorTile->ui[y+1][x+0] = c2;
if (spu_extract(mask, 3))
- colorTile->ui[y+1][x+1] = c3;
+ colorTile->ui[y+1][x+1] = c3;
#else
/*
* Quad layout:
if (spu_extract(mask, 2))
colorTile->ui[y][x*2+2] = c2;
if (spu_extract(mask, 3))
- colorTile->ui[y][x*2+3] = c3;
+ colorTile->ui[y][x*2+3] = c3;
#endif
}
projects / mesa.git / commitdiff