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https://github.com/hrydgard/ppsspp.git
synced 2025-03-04 04:07:08 +00:00
softgpu: Fix rgba texture function.
softgpu: Reorder pixel pipeline steps to match hardware order (without caring about performance loss, should be optimized later!). softgpu: Implement alpha and color testing. softgpu: Change CLUT lookup code a bit, still need to make some sense out of this.
This commit is contained in:
Tony Wasserka
neobrain
parent
c549ee0d12
commit
88348a3d73
@ -83,7 +83,7 @@ u32 DecodeRGB565(u16 src)
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u8 r = src & 0x1F;
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u8 g = (src >> 5) & 0x3F;
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u8 b = (src >> 11) & 0x1F;
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u8 a = 0; // TODO: Might want to use 0xFF here instead?
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u8 a = 0xff; // TODO: Might want to use 0xFF here instead?
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r = (r << 3) | (r >> 2);
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g = (g << 2) | (g >> 4);
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b = (b << 3) | (b >> 2);
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@ -141,7 +141,7 @@ u32 SampleNearest(int level, float s, float t)
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index = (index & 0xFF) | gstate.getClutIndexStartPos(); // Topmost bit is copied from start pos
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// TODO: Assert that we're using GE_CMODE_32BIT_ABGR8888;
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return clut[index];
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return DecodeRGBA8888(bswap32(*(u32*)&clut[index]));
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} else if (texfmt == GE_TFMT_CLUT4) {
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srcptr += GetPixelDataOffset(4, texbufwidth*8, u, v);
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@ -151,7 +151,7 @@ u32 SampleNearest(int level, float s, float t)
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index = (index & 0xFF) | gstate.getClutIndexStartPos(); // Topmost bit is copied from start pos
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// TODO: Assert that we're using GE_CMODE_32BIT_ABGR8888;
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return clut[index];
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return DecodeRGBA8888(bswap32(*(u32*)&clut[index])); // TODO: No idea if that bswap is correct
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} else {
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ERROR_LOG(G3D, "Unsupported texture format: %x", texfmt);
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return 0;
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@ -306,61 +306,6 @@ void DrawTriangle(const VertexData& v0, const VertexData& v1, const VertexData&
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// TODO: Depth range test
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if (gstate.isStencilTestEnabled() && !gstate.isModeClear()) {
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bool pass = false;
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u8 stencil = GetPixelStencil(p.x, p.y) & gstate.getStencilTestMask(); // TODO: Magic?
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u8 ref = gstate.getStencilTestRef() & gstate.getStencilTestMask();
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switch (gstate.getStencilTestFunction()) {
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case GE_COMP_NEVER:
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pass = false;
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break;
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case GE_COMP_ALWAYS:
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pass = true;
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break;
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case GE_COMP_EQUAL:
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pass = (stencil == ref);
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break;
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case GE_COMP_NOTEQUAL:
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pass = (stencil != ref);
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break;
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case GE_COMP_LESS:
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pass = (stencil < ref);
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break;
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case GE_COMP_LEQUAL:
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pass = (stencil <= ref);
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break;
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case GE_COMP_GREATER:
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pass = (stencil > ref);
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break;
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case GE_COMP_GEQUAL:
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pass = (stencil >= ref);
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break;
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}
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if (!pass) {
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ApplyStencilOp(gstate.getStencilOpSFail(), p.x, p.y);
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continue;
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}
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}
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// TODO: Is it safe to ignore gstate.isDepthTestEnabled() when clear mode is enabled?
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if ((gstate.isDepthTestEnabled() && !gstate.isModeThrough()) || gstate.isModeClear()) {
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// TODO: Is that the correct way to interpolate?
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u16 z = (u16)((v0.drawpos.z * w0 + v1.drawpos.z * w1 + v2.drawpos.z * w2) / (w0+w1+w2));
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// TODO: Verify that stencil op indeed needs to be applied here even if stencil testing is disabled
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if (!DepthTestPassed(p.x, p.y, z)) {
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ApplyStencilOp(gstate.getStencilOpZFail(), p.x, p.y);
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continue;
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} else {
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ApplyStencilOp(gstate.getStencilOpZPass(), p.x, p.y);
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}
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// TODO: Is this condition correct?
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if (gstate.isDepthWriteEnabled() || ((gstate.clearmode&0x40) && gstate.isModeClear()))
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SetPixelDepth(p.x, p.y, z);
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}
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float s = (v0.texturecoords.s() * w0 / v0.clippos.w + v1.texturecoords.s() * w1 / v1.clippos.w + v2.texturecoords.s() * w2 / v2.clippos.w) / den;
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float t = (v0.texturecoords.t() * w0 / v0.clippos.w + v1.texturecoords.t() * w1 / v1.clippos.w + v2.texturecoords.t() * w2 / v2.clippos.w) / den;
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Vec3<int> prim_color_rgb(0, 0, 0);
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@ -387,7 +332,7 @@ void DrawTriangle(const VertexData& v0, const VertexData& v1, const VertexData&
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if (gstate.isTextureMapEnabled() && !gstate.isModeClear()) {
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Vec4<int> texcolor = Vec4<int>::FromRGBA(/*TextureDecoder::*/SampleNearest(0, s, t));
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bool rgba = (gstate.texfunc & 0x10) != 0;
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bool rgba = (gstate.texfunc & 0x100) != 0;
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// texture function
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switch (gstate.getTextureFunction()) {
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@ -439,15 +384,120 @@ void DrawTriangle(const VertexData& v0, const VertexData& v1, const VertexData&
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}
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prim_color_rgb += sec_color;
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if (prim_color_rgb.r() > 255) prim_color_rgb.r() = 255;
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if (prim_color_rgb.g() > 255) prim_color_rgb.g() = 255;
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if (prim_color_rgb.b() > 255) prim_color_rgb.b() = 255;
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if (prim_color_rgb.r() < 0) prim_color_rgb.r() = 0;
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if (prim_color_rgb.g() < 0) prim_color_rgb.g() = 0;
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if (prim_color_rgb.b() < 0) prim_color_rgb.b() = 0;
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// TODO: Fogging
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if (gstate.isColorTestEnabled()) {
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bool pass = false;
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Vec3<int> ref = Vec3<int>::FromRGB(gstate.colorref&(gstate.colormask&0xFFFFFF));
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Vec3<int> color = Vec3<int>::FromRGB(prim_color_rgb.ToRGB()&(gstate.colormask&0xFFFFFF));
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switch (gstate.colortest & 0x3) {
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case GE_COMP_NEVER:
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pass = false;
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break;
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case GE_COMP_ALWAYS:
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pass = true;
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break;
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case GE_COMP_EQUAL:
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pass = (color.r() == ref.r() && color.g() == ref.g() && color.b() == ref.b());
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break;
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case GE_COMP_NOTEQUAL:
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pass = (color.r() != ref.r() || color.g() != ref.g() || color.b() != ref.b());
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break;
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}
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if (!pass)
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continue;
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}
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if (gstate.isAlphaTestEnabled()) {
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bool pass = false;
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u8 ref = (gstate.alphatest>>8) & (gstate.alphatest>>16);
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u8 alpha = prim_color_a & (gstate.alphatest>>16);
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switch (gstate.alphatest & 0x7) {
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case GE_COMP_NEVER:
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pass = false;
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break;
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case GE_COMP_ALWAYS:
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pass = true;
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break;
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case GE_COMP_EQUAL:
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pass = (alpha == ref);
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break;
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case GE_COMP_NOTEQUAL:
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pass = (alpha != ref);
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break;
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case GE_COMP_LESS:
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pass = (alpha < ref);
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break;
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case GE_COMP_LEQUAL:
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pass = (alpha <= ref);
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break;
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case GE_COMP_GREATER:
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pass = (alpha > ref);
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break;
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case GE_COMP_GEQUAL:
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pass = (alpha >= ref);
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break;
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}
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if (!pass)
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continue;
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}
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if (gstate.isStencilTestEnabled() && !gstate.isModeClear()) {
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bool pass = false;
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u8 stencil = GetPixelStencil(p.x, p.y) & gstate.getStencilTestMask(); // TODO: Magic?
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u8 ref = gstate.getStencilTestRef() & gstate.getStencilTestMask();
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switch (gstate.getStencilTestFunction()) {
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case GE_COMP_NEVER:
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pass = false;
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break;
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case GE_COMP_ALWAYS:
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pass = true;
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break;
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case GE_COMP_EQUAL:
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pass = (stencil == ref);
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break;
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case GE_COMP_NOTEQUAL:
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pass = (stencil != ref);
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break;
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case GE_COMP_LESS:
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pass = (stencil < ref);
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break;
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case GE_COMP_LEQUAL:
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pass = (stencil <= ref);
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break;
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case GE_COMP_GREATER:
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pass = (stencil > ref);
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break;
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case GE_COMP_GEQUAL:
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pass = (stencil >= ref);
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break;
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}
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if (!pass) {
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ApplyStencilOp(gstate.getStencilOpSFail(), p.x, p.y);
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continue;
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}
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}
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// TODO: Is it safe to ignore gstate.isDepthTestEnabled() when clear mode is enabled?
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if ((gstate.isDepthTestEnabled() && !gstate.isModeThrough()) || gstate.isModeClear()) {
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// TODO: Is that the correct way to interpolate?
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u16 z = (u16)((v0.drawpos.z * w0 + v1.drawpos.z * w1 + v2.drawpos.z * w2) / (w0+w1+w2));
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// TODO: Verify that stencil op indeed needs to be applied here even if stencil testing is disabled
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if (!DepthTestPassed(p.x, p.y, z)) {
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ApplyStencilOp(gstate.getStencilOpZFail(), p.x, p.y);
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continue;
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} else {
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ApplyStencilOp(gstate.getStencilOpZPass(), p.x, p.y);
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}
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// TODO: Is this condition correct?
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if (gstate.isDepthWriteEnabled() || ((gstate.clearmode&0x40) && gstate.isModeClear()))
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SetPixelDepth(p.x, p.y, z);
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}
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if (gstate.isAlphaBlendEnabled() && !gstate.isModeClear()) {
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Vec4<int> dst = Vec4<int>::FromRGBA(GetPixelColor(p.x, p.y));
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@ -554,6 +604,14 @@ void DrawTriangle(const VertexData& v0, const VertexData& v1, const VertexData&
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break;
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}
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}
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if (prim_color_rgb.r() > 255) prim_color_rgb.r() = 255;
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if (prim_color_rgb.g() > 255) prim_color_rgb.g() = 255;
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if (prim_color_rgb.b() > 255) prim_color_rgb.b() = 255;
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if (prim_color_a > 255) prim_color_a = 255;
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if (prim_color_rgb.r() < 0) prim_color_rgb.r() = 0;
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if (prim_color_rgb.g() < 0) prim_color_rgb.g() = 0;
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if (prim_color_rgb.b() < 0) prim_color_rgb.b() = 0;
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if (prim_color_a < 0) prim_color_a = 0;
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SetPixelColor(p.x, p.y, Vec4<int>(prim_color_rgb.r(), prim_color_rgb.g(), prim_color_rgb.b(), prim_color_a).ToRGBA());
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}
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}
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