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-rw-r--r--src/core/rasterizer.c181
1 files changed, 63 insertions, 118 deletions
diff --git a/src/core/rasterizer.c b/src/core/rasterizer.c
index bf210b7..772eb29 100644
--- a/src/core/rasterizer.c
+++ b/src/core/rasterizer.c
@@ -84,18 +84,11 @@ static void puttriangle(Vec2* A, Vec2* B, Vec2* C, Color c) {
extern FragmentShaderIn ssr_frag_in;
-void ssrR_triangle(
- Vec4* CA, Vec4* CB, Vec4* CC,
- Vert* A, Vert* B, Vert* C,
- bool from_reg,
- ClippedVert* CVA, ClippedVert* CVB, ClippedVert* CVC,
- Program* program,
- UniformCollection* uniforms
-) {
+void ssrR_triangle( Vec4* CA, Vec4* CB, Vec4* CC, Vert* A, Vert* B, Vert* C, Program* program, UniformCollection* uniforms ) {
ssr_assert(CA && CB && CC && program);
static Vec3 SA, SB, SC;
- static Vec3 bcp;
+ static Vec3 bc;
vec4_dividew(CA, &SA); ssrU_viewport(&SA, &SA);
vec4_dividew(CB, &SB); ssrU_viewport(&SB, &SB);
@@ -104,11 +97,11 @@ void ssrR_triangle(
puttriangle(&SA, &SB, &SC, 0xffff0000);
return;
*/
- Vec3 *sa = &SA, *sb = &SB, *sc = &SC, *tmp; Vec4* v4tmp; Vert* vtemp; ClippedVert* cvtmp;
+ Vec3 *sa = &SA, *sb = &SB, *sc = &SC, *tmp; Vec4* v4tmp; Vert* vtemp;
#define swap(t, a, b) {t = a; a = b; b = t;} /*sort in y axis*/
- if (sb->y < sa->y) { swap(tmp, sa, sb); swap(v4tmp, CA, CB); swap(vtemp, A, B); if (!from_reg) swap(cvtmp, CVA, CVB); }
- if (sc->y < sb->y) { swap(tmp, sb, sc); swap(v4tmp, CB, CC); swap(vtemp, B, C); if (!from_reg) swap(cvtmp, CVC, CVB); }
- if (sb->y < sa->y) { swap(tmp, sa, sb); swap(v4tmp, CA, CB); swap(vtemp, A, B); if (!from_reg) swap(cvtmp, CVA, CVB); }
+ if (sb->y < sa->y) { swap(tmp, sa, sb); swap(v4tmp, CA, CB); swap(vtemp, A, B); }
+ if (sc->y < sb->y) { swap(tmp, sb, sc); swap(v4tmp, CB, CC); swap(vtemp, B, C); }
+ if (sb->y < sa->y) { swap(tmp, sa, sb); swap(v4tmp, CA, CB); swap(vtemp, A, B); }
#undef swap
Vec2 AB = {sb->x - sa->x, sb->y - sa->y}, AC = { sc->x - sa->x, sc->y - sa->y };
@@ -118,7 +111,7 @@ void ssrR_triangle(
float invkAB = (sb->x - sa->x) / (sb->y - sa->y + EPSILON);
float invkBC = (sc->x - sb->x) / (sc->y - sb->y + EPSILON);
- Color color;
+ Color32 color;
float from, to;
Vec2 p;
float depth;
@@ -126,115 +119,67 @@ void ssrR_triangle(
uint varying_flag = program->varying_flag;
-#define DO_INTERPOLATION \
- if (varying_flag & VARYING_BASIC) { \
- if (varying_flag & VARYING_POSITION) ssrS_bcpvec3(&bcp, &A->position, &B->position, &C->position, &ssr_frag_in.position); \
- if (varying_flag & VARYING_NORMAL) ssrS_bcpvec3(&bcp, &A->normal, &B->normal, &C->normal, &ssr_frag_in.normal); \
- if (varying_flag & VARYING_TANGENT) ssrS_bcpvec3(&bcp, &A->tangent, &B->tangent, &C->tangent, &ssr_frag_in.tangent); \
- if (varying_flag & VARYING_TEXCOORD) ssrS_bcpvec2(&bcp, &A->texcoord, &B->texcoord, &C->texcoord, &ssr_frag_in.texcoord); \
- if (varying_flag & VARYING_JOINT) ssrS_bcpvec4(&bcp, &A->joint, &B->joint, &C->joint, &ssr_frag_in.joint); \
- if (varying_flag & VARYING_WEIGHT) ssrS_bcpvec4(&bcp, &A->weight, &B->weight, &C->weight, &ssr_frag_in.weight); \
- if (varying_flag & VARYING_COLOR) ssrS_bcpcolor(&bcp, A->color, B->color, C->color, &ssr_frag_in.color); \
- } \
- if (from_reg) { /*extra varying*/ \
- uint i_a = A->index, i_b = B->index, i_c = C->index; \
- if (varying_flag & VARYING_NUM) { \
- if (varying_flag & VARYING_NUM_00) reg_num_00 = ssrS_bcpnum(&bcp, reg_num[0].num[i_a], reg_num[0].num[i_b], reg_num[0].num[i_c], &ssr_frag_in.num[0]); \
- if (varying_flag & VARYING_NUM_01) reg_num_01 = ssrS_bcpnum(&bcp, reg_num[1].num[i_a], reg_num[1].num[i_b], reg_num[1].num[i_c], &ssr_frag_in.num[1]); \
- if (varying_flag & VARYING_NUM_02) reg_num_02 = ssrS_bcpnum(&bcp, reg_num[2].num[i_a], reg_num[2].num[i_b], reg_num[2].num[i_c], &ssr_frag_in.num[2]); \
- if (varying_flag & VARYING_NUM_03) reg_num_03 = ssrS_bcpnum(&bcp, reg_num[3].num[i_a], reg_num[3].num[i_b], reg_num[3].num[i_c], &ssr_frag_in.num[3]); \
- } \
- if (varying_flag & VARYING_V2) { \
- if (varying_flag & VARYING_V2_00) reg_v2_00 = ssrS_bcpvec2(&bcp, &reg_v2[0].v2[i_a], &reg_v2[0].v2[i_b], &reg_v2[0].v2[i_c], &ssr_frag_in.v2[0]); \
- if (varying_flag & VARYING_V2_01) reg_v2_01 = ssrS_bcpvec2(&bcp, &reg_v2[1].v2[i_a], &reg_v2[1].v2[i_b], &reg_v2[1].v2[i_c], &ssr_frag_in.v2[1]); \
- if (varying_flag & VARYING_V2_02) reg_v2_02 = ssrS_bcpvec2(&bcp, &reg_v2[2].v2[i_a], &reg_v2[2].v2[i_b], &reg_v2[2].v2[i_c], &ssr_frag_in.v2[2]); \
- if (varying_flag & VARYING_V2_03) reg_v2_03 = ssrS_bcpvec2(&bcp, &reg_v2[3].v2[i_a], &reg_v2[3].v2[i_b], &reg_v2[3].v2[i_c], &ssr_frag_in.v2[3]); \
- if (varying_flag & VARYING_V2_04) reg_v2_04 = ssrS_bcpvec2(&bcp, &reg_v2[4].v2[i_a], &reg_v2[4].v2[i_b], &reg_v2[4].v2[i_c], &ssr_frag_in.v2[4]); \
- if (varying_flag & VARYING_V2_05) reg_v2_05 = ssrS_bcpvec2(&bcp, &reg_v2[5].v2[i_a], &reg_v2[5].v2[i_b], &reg_v2[5].v2[i_c], &ssr_frag_in.v2[5]); \
- } \
- if (varying_flag & VARYING_V3) { \
- if (varying_flag & VARYING_V3_00) reg_v3_00 = ssrS_bcpvec3(&bcp, &reg_v3[0].v3[i_a], &reg_v3[0].v3[i_b], &reg_v3[0].v3[i_c], &ssr_frag_in.v3[0]); \
- if (varying_flag & VARYING_V3_01) reg_v3_01 = ssrS_bcpvec3(&bcp, &reg_v3[1].v3[i_a], &reg_v3[1].v3[i_b], &reg_v3[1].v3[i_c], &ssr_frag_in.v3[1]); \
- if (varying_flag & VARYING_V3_02) reg_v3_02 = ssrS_bcpvec3(&bcp, &reg_v3[2].v3[i_a], &reg_v3[2].v3[i_b], &reg_v3[2].v3[i_c], &ssr_frag_in.v3[2]); \
- if (varying_flag & VARYING_V3_03) reg_v3_03 = ssrS_bcpvec3(&bcp, &reg_v3[3].v3[i_a], &reg_v3[3].v3[i_b], &reg_v3[3].v3[i_c], &ssr_frag_in.v3[3]); \
- if (varying_flag & VARYING_V3_04) reg_v3_04 = ssrS_bcpvec3(&bcp, &reg_v3[4].v3[i_a], &reg_v3[4].v3[i_b], &reg_v3[4].v3[i_c], &ssr_frag_in.v3[4]); \
- if (varying_flag & VARYING_V3_05) reg_v3_05 = ssrS_bcpvec3(&bcp, &reg_v3[5].v3[i_a], &reg_v3[5].v3[i_b], &reg_v3[5].v3[i_c], &ssr_frag_in.v3[5]); \
- if (varying_flag & VARYING_V3_06) reg_v3_06 = ssrS_bcpvec3(&bcp, &reg_v3[6].v3[i_a], &reg_v3[6].v3[i_b], &reg_v3[6].v3[i_c], &ssr_frag_in.v3[6]); \
- if (varying_flag & VARYING_V3_07) reg_v3_07 = ssrS_bcpvec3(&bcp, &reg_v3[7].v3[i_a], &reg_v3[7].v3[i_b], &reg_v3[7].v3[i_c], &ssr_frag_in.v3[7]); \
- } \
- if (varying_flag & VARYING_V4) { \
- if (varying_flag & VARYING_V4_00) reg_v4_00 = ssrS_bcpvec4(&bcp, &reg_v4[0].v4[i_a], &reg_v4[0].v4[i_b], &reg_v4[0].v4[i_c], &ssr_frag_in.v4[0]); \
- if (varying_flag & VARYING_V4_01) reg_v4_01 = ssrS_bcpvec4(&bcp, &reg_v4[1].v4[i_a], &reg_v4[1].v4[i_b], &reg_v4[1].v4[i_c], &ssr_frag_in.v4[1]); \
- if (varying_flag & VARYING_V4_02) reg_v4_02 = ssrS_bcpvec4(&bcp, &reg_v4[2].v4[i_a], &reg_v4[2].v4[i_b], &reg_v4[2].v4[i_c], &ssr_frag_in.v4[2]); \
- if (varying_flag & VARYING_V4_03) reg_v4_03 = ssrS_bcpvec4(&bcp, &reg_v4[3].v4[i_a], &reg_v4[3].v4[i_b], &reg_v4[3].v4[i_c], &ssr_frag_in.v4[3]); \
- if (varying_flag & VARYING_V4_04) reg_v4_04 = ssrS_bcpvec4(&bcp, &reg_v4[4].v4[i_a], &reg_v4[4].v4[i_b], &reg_v4[4].v4[i_c], &ssr_frag_in.v4[4]); \
- if (varying_flag & VARYING_V4_05) reg_v4_05 = ssrS_bcpvec4(&bcp, &reg_v4[5].v4[i_a], &reg_v4[5].v4[i_b], &reg_v4[5].v4[i_c], &ssr_frag_in.v4[5]); \
- } \
- } else { \
- if (varying_flag & VARYING_NUM) { \
- if (varying_flag & VARYING_NUM_00) reg_num_00 = ssrS_bcpnum(&bcp, CVA->num[0], CVB->num[0], CVC->num[0], &ssr_frag_in.num[0]); \
- if (varying_flag & VARYING_NUM_01) reg_num_01 = ssrS_bcpnum(&bcp, CVA->num[1], CVB->num[1], CVC->num[1], &ssr_frag_in.num[1]); \
- if (varying_flag & VARYING_NUM_02) reg_num_02 = ssrS_bcpnum(&bcp, CVA->num[2], CVB->num[2], CVC->num[2], &ssr_frag_in.num[2]); \
- if (varying_flag & VARYING_NUM_03) reg_num_03 = ssrS_bcpnum(&bcp, CVA->num[3], CVB->num[3], CVC->num[3], &ssr_frag_in.num[3]); \
- } \
- if (varying_flag & VARYING_V2) { \
- if (varying_flag & VARYING_V2_00) reg_v2_00 = ssrS_bcpvec2(&bcp, &CVA->v2[0], &CVB->v2[0], &CVC->v2[0], &ssr_frag_in.v2[0]); \
- if (varying_flag & VARYING_V2_01) reg_v2_01 = ssrS_bcpvec2(&bcp, &CVA->v2[1], &CVB->v2[1], &CVC->v2[1], &ssr_frag_in.v2[1]); \
- if (varying_flag & VARYING_V2_02) reg_v2_02 = ssrS_bcpvec2(&bcp, &CVA->v2[2], &CVB->v2[2], &CVC->v2[2], &ssr_frag_in.v2[2]); \
- if (varying_flag & VARYING_V2_03) reg_v2_03 = ssrS_bcpvec2(&bcp, &CVA->v2[3], &CVB->v2[3], &CVC->v2[3], &ssr_frag_in.v2[3]); \
- if (varying_flag & VARYING_V2_04) reg_v2_04 = ssrS_bcpvec2(&bcp, &CVA->v2[4], &CVB->v2[4], &CVC->v2[4], &ssr_frag_in.v2[4]); \
- if (varying_flag & VARYING_V2_05) reg_v2_05 = ssrS_bcpvec2(&bcp, &CVA->v2[5], &CVB->v2[5], &CVC->v2[5], &ssr_frag_in.v2[5]); \
- } \
- if (varying_flag & VARYING_V3) { \
- if (varying_flag & VARYING_V3_00) reg_v3_00 = ssrS_bcpvec3(&bcp, &CVA->v3[0], &CVB->v3[0], &CVC->v3[0], &ssr_frag_in.v3[0]); \
- if (varying_flag & VARYING_V3_01) reg_v3_01 = ssrS_bcpvec3(&bcp, &CVA->v3[1], &CVB->v3[1], &CVC->v3[1], &ssr_frag_in.v3[1]); \
- if (varying_flag & VARYING_V3_02) reg_v3_02 = ssrS_bcpvec3(&bcp, &CVA->v3[2], &CVB->v3[2], &CVC->v3[2], &ssr_frag_in.v3[2]); \
- if (varying_flag & VARYING_V3_03) reg_v3_03 = ssrS_bcpvec3(&bcp, &CVA->v3[3], &CVB->v3[3], &CVC->v3[3], &ssr_frag_in.v3[3]); \
- if (varying_flag & VARYING_V3_04) reg_v3_04 = ssrS_bcpvec3(&bcp, &CVA->v3[4], &CVB->v3[4], &CVC->v3[4], &ssr_frag_in.v3[4]); \
- if (varying_flag & VARYING_V3_05) reg_v3_05 = ssrS_bcpvec3(&bcp, &CVA->v3[5], &CVB->v3[5], &CVC->v3[5], &ssr_frag_in.v3[5]); \
- if (varying_flag & VARYING_V3_06) reg_v3_06 = ssrS_bcpvec3(&bcp, &CVA->v3[6], &CVB->v3[6], &CVC->v3[6], &ssr_frag_in.v3[6]); \
- if (varying_flag & VARYING_V3_07) reg_v3_07 = ssrS_bcpvec3(&bcp, &CVA->v3[7], &CVB->v3[7], &CVC->v3[7], &ssr_frag_in.v3[7]); \
- } \
- if (varying_flag & VARYING_V4) { \
- if (varying_flag & VARYING_V4_00) reg_v4_00 = ssrS_bcpvec4(&bcp, &CVA->v4[0], &CVB->v4[0], &CVC->v4[0], &ssr_frag_in.v4[0]); \
- if (varying_flag & VARYING_V4_01) reg_v4_01 = ssrS_bcpvec4(&bcp, &CVA->v4[1], &CVB->v4[1], &CVC->v4[1], &ssr_frag_in.v4[1]); \
- if (varying_flag & VARYING_V4_02) reg_v4_02 = ssrS_bcpvec4(&bcp, &CVA->v4[2], &CVB->v4[2], &CVC->v4[2], &ssr_frag_in.v4[2]); \
- if (varying_flag & VARYING_V4_03) reg_v4_03 = ssrS_bcpvec4(&bcp, &CVA->v4[3], &CVB->v4[3], &CVC->v4[3], &ssr_frag_in.v4[3]); \
- if (varying_flag & VARYING_V4_04) reg_v4_04 = ssrS_bcpvec4(&bcp, &CVA->v4[4], &CVB->v4[4], &CVC->v4[4], &ssr_frag_in.v4[4]); \
- if (varying_flag & VARYING_V4_05) reg_v4_05 = ssrS_bcpvec4(&bcp, &CVA->v4[5], &CVB->v4[5], &CVC->v4[5], &ssr_frag_in.v4[5]); \
- } \
- }
-
Vec3 s[2], u;
s[0].x = sc->x - sa->x; s[0].y = sb->x - sa->x;
s[1].x = sc->y - sa->y; s[1].y = sb->y - sa->y;
+ bool depth_test = ssr_isenable(ENABLEMASK_DEPTHTEST);
+ bool multi_sample = ssr_isenable(ENABLEMASK_MULTISAMPLE);
+ bool blend = ssr_isenable(ENABLEMASK_BLEND);
+ bool write_depth = ssr_isenable(ENABLEMASK_WRITEDEPTH);
+
+#define DO_INTERPOLATION \
+ if (varying_flag & VARYING_BASIC) { \
+ if (varying_flag & VARYING_POSITION) ssrS_bcpvec3(&bc, &A->position, &B->position, &C->position, &ssr_frag_in.position); \
+ if (varying_flag & VARYING_NORMAL) ssrS_bcpvec3(&bc, &A->normal, &B->normal, &C->normal, &ssr_frag_in.normal); \
+ if (varying_flag & VARYING_TANGENT) ssrS_bcpvec3(&bc, &A->tangent, &B->tangent, &C->tangent, &ssr_frag_in.tangent); \
+ if (varying_flag & VARYING_TEXCOORD) ssrS_bcpvec2(&bc, &A->texcoord, &B->texcoord, &C->texcoord, &ssr_frag_in.texcoord); \
+/* if (varying_flag & VARYING_JOINT) ssrS_bcpvec4(&bc, &A->joint, &B->joint, &C->joint, &ssr_frag_in.joint); \
+ if (varying_flag & VARYING_WEIGHT) ssrS_bcpvec4(&bc, &A->weight, &B->weight, &C->weight, &ssr_frag_in.weight); \
+ */ if (varying_flag & VARYING_COLOR) ssrS_bcpcolor(&bc, A->color, B->color, C->color, &ssr_frag_in.color); \
+ }
+
#define RENDER_TRIANGLE \
- for (p.y = FROM->y; p.y < TO->y + OFFSET; ++p.y) { \
- SET_FROM_AND_TO \
- s[1].z = sa->y - p.y; \
- for (p.x = from; order * (p.x - to) <= 0; p.x += order) { \
- s[0].z = sa->x - p.x; \
- vec3_cross(&s[0], &s[1], &u); \
- discardif(compare(u.z, 0)); \
- u.z = 1.f / u.z; \
- bcp.x = 1.f - (u.x + u.y) * u.z; \
- bcp.y = u.y * u.z; \
- bcp.z = u.x * u.z; \
- discardif(bcp.x < 0 || bcp.y < 0 || bcp.z < 0); \
- /*perspective correction*/ \
- bcp.x *= CAw; bcp.y *= CBw; bcp.z *= CCw; \
- vec3_scale(&bcp, 1.f / (bcp.x + bcp.y + bcp.z), &bcp); \
- /*depth test*/ \
- if(ssr_isenable(ENABLEMASK_DEPTHTEST)){ \
- depth = (bcp.x*sa->z+bcp.y*sb->z+bcp.z*sc->z) * 0.5f + 0.5f;\
- discardif(!ssr_testdepthf(p.x, p.y, depth)); \
- } \
- /*set varying variables*/ \
- DO_INTERPOLATION \
- if(program->fragmentshader(uniforms, &ssr_frag_in, &color)) \
- ssr_putpoint(p.x, p.y, color); \
- } \
+ for (p.y = FROM->y; p.y < TO->y + OFFSET; ++p.y) { \
+ SET_FROM_AND_TO \
+ s[1].z = sa->y - p.y; \
+ for (p.x = from; order * (p.x - to) <= 0; p.x += order) { \
+ s[0].z = sa->x - p.x; \
+ vec3_cross(&s[0], &s[1], &u); \
+ discardif(compare(u.z, 0)); \
+ u.z = 1.f / u.z; \
+ bc.x = 1.f - (u.x + u.y) * u.z; \
+ bc.y = u.y * u.z; \
+ bc.z = u.x * u.z; \
+ discardif(bc.x < 0 || bc.y < 0 || bc.z < 0); \
+ /*perspective correction*/ \
+ bc.x *= CAw; bc.y *= CBw; bc.z *= CCw; \
+ vec3_scale(&bc, 1.f / (bc.x + bc.y + bc.z), &bc); \
+ /*early depth testing*/ \
+ if(depth_test ){ \
+ depth = bc.x*sa->z+bc.y*sb->z+bc.z*sc->z; \
+ discardif(!ssr_testdepth(p.x, p.y, depth)); \
+ } \
+ /*set varying variables*/ \
+ DO_INTERPOLATION \
+ ssrS_solveregs(&bc, A->index, B->index, C->index); \
+ /*enter fragment shader*/ \
+ if(program->fragmentshader(uniforms, &ssr_frag_in, &color)) { \
+ /*MSAA*/ \
+ if(multi_sample) { \
+ \
+ } \
+ /*blend*/ \
+ if(blend) { \
+ Color32 dst; dst = ssr_getfbocolor(p.x, p.y); \
+ ssr_blend(&color, &dst, &color); \
+ } \
+ if(write_depth) { \
+ ssr_writedepth(p.x, p.y, depth); \
+ } \
+ ssr_putpoint32(p.x, p.y, &color); \
+ } \
+ } \
}
#define FROM sa
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