3 files changed, 192 insertions, 0 deletions

diff --git a/src/example/04_bloom/04_bloom.c b/src/example/04_bloom/04_bloom.c
new file mode 100644
index 0000000..6f37f62
--- /dev/null
+++ b/src/example/04_bloom/04_bloom.c
@@ -0,0 +1,120 @@
+#include "../example.h"
+#include "../../extend/mesh.h"
+
+static int cube[] = {
+	0, 1, 2, 0, 2, 3,
+	1, 5, 2, 2, 5, 6,
+	4, 6, 5, 4, 7, 6,
+	0, 3, 7, 0, 7, 4,
+	0, 4, 1, 1, 4, 5,
+	2, 6, 3, 3, 6, 7
+};
+
+static Vert verts[] = {
+	{0, {1, 1, 1}, {1, 1, 1}, zerovec4, {1, 1}, 0xffff0000},
+	{1, {-1, 1, 1}, {-1, 1, 1}, zerovec4, {0, 1},0xff00ff00},
+	{2, {-1, -1, 1}, {-1, -1, 1}, zerovec4, {0, 0}, 0xff0000ff},
+	{3, {1, -1, 1}, {1, -1, 1}, zerovec4, {1, 0}, 0xffff00ff},
+	{4, {1, 1, -1}, {1, 1, -1}, zerovec4, {1, 0} , 0xffaa28aa},
+	{5, {-1, 1, -1}, {-1, 1, -1}, zerovec4, {0, 0},0xffFFC58E},
+	{6, {-1, -1, -1}, {-1, -1, -1}, zerovec4, {0, 1}, 0xffA100FF},
+	{7, {1, -1, -1}, {1, -1, -1}, zerovec4, {1, 1} , 0xffFAFF00},
+};
+
+extern Program _04_bloom_preprocess;
+extern Program _04_bloom_postprocess;
+
+static Vec3 light = { -1, -1, -1 };
+
+static Texture* cyborg_albedo;
+static Mesh* cyborg_mesh;
+
+static FrameBuffer* fbo;
+static float* depth_buffer;
+static byte* stencil_buffer;
+
+static Texture* albedo_tex;
+static Texture* bright_tex;
+
+void onloadbloom(void* data) {
+	ssr_matrixmode(MATRIX_PROJECTION);
+	ssr_loadidentity();
+	ssr_perspective(90, ssr_getaspect(), 0.1, 10);
+	//ssr_ortho(-5, 5, -4, 4, 0.1, 10);
+
+
+	ssr_setblendfunc(BLEND_SRC_ALPHA, BLEND_ONE_MINUS_SRC_ALPHA);
+
+	albedo_tex = texture_create(600, 480);
+	bright_tex = texture_create(600, 480);
+
+	depth_buffer = ssrM_newvector(float, 600 * 480);
+	stencil_buffer = ssrM_newvector(byte, 600 * 480);
+
+	fbo = fbo_create();
+	fbo_attachrendertexture(fbo, 0, albedo_tex);
+	fbo_attachrendertexture(fbo, 1, bright_tex);
+	fbo_attachdepthbuffer(fbo, depth_buffer);
+	fbo_attachstencilbuffer(fbo, stencil_buffer);
+}
+
+void oneventbloom(void* data) {
+	SDL_Event* e = (SDL_Event*)data;
+}
+
+static float _t = 0;
+static Quat q;
+
+void onupdatebloom(void*data) {
+	uint dt = *(uint*)data;
+	_t += dt / 1000.f;
+
+	ssr_matrixmode(MATRIX_VIEW);
+	ssr_loadidentity();
+	float distance = 2;
+	Vec3 p = { distance * sin(_t), 5, distance * cos(_t) }, target = { 0, 0, 0 };
+	ssr_lookat(&p, &target, &vec3up);
+
+	ssr_matrixmode(MATRIX_MODEL);
+	ssr_loadidentity();
+}
+
+static void renderquad() {
+	/*È«ÆÁÌØЧ*/
+	static Vert verts[] = {
+		{0, {1, 1, 0}, zerovec3, zerovec3, {1, 1}, 0},
+		{1, {-1, 1, 0}, zerovec3, zerovec3, {0, 1},0},
+		{2, {-1, -1, 0}, zerovec3, zerovec3, {0, 0}, 0},
+		{3, {1, -1, 0}, zerovec3, zerovec3, {1, 0}, 0},
+	};
+	static int quad[] = {
+			0, 1, 2, 0, 2, 3,
+	};
+	ssr_useprogram(&_04_bloom_postprocess);
+	ssr_bindvertices(verts, 4, quad, 2);
+	ssr_setuniformtex(0, albedo_tex);
+	ssr_setuniformtex(1, bright_tex);
+	ssr_draw(PRIMITIVE_TRIANGLE);
+}
+
+void ondrawbloom(void*data) {
+	ssr_enable(ENABLE_BACKFACECULL | ENABLE_DEPTHTEST | ENABLE_BLEND | ENABLE_WRITEDEPTH);
+
+	/*render cube*/
+	ssr_bindframebuffer(fbo);
+	ssr_clearcolor(0xff202020);
+	ssr_cleardepth();
+	ssr_clearstencil(0);
+	ssr_bindvertices(verts, 8, cube, 12);
+	ssr_useprogram(&_04_bloom_preprocess);
+	ssr_bindvertices(verts, 8, cube, 12);
+	ssr_draw(PRIMITIVE_TRIANGLE);
+
+	ssr_disable(ENABLE_BLEND | ENABLE_DEPTHTEST | ENABLE_WRITEDEPTH | ENABLE_BACKFACECULL);
+	ssr_unbindframebuffer();
+	ssr_clearcolor(0xff202020);
+	ssr_cleardepth();
+	ssr_clearstencil(0);
+
+	renderquad();
+}
diff --git a/src/example/04_bloom/postprocess.c b/src/example/04_bloom/postprocess.c
new file mode 100644
index 0000000..1ec10e4
--- /dev/null
+++ b/src/example/04_bloom/postprocess.c
@@ -0,0 +1,41 @@
+#include "../../shaders/common.h"
+
+/*uniforms*/
+#define _frag_tex    UTEX(0)
+#define _bright_tex  UTEX(1)
+
+/*varyings*/
+#define _texcoord reg_v2_00
+
+static float weight[5] = { 0.2270270270, 0.1945945946, 0.1216216216, 0.0540540541, 0.0162162162 };
+
+static void vert(UniformCollection* uniforms, VertexShaderIn* in, Vec4* clipcoord) {
+	clipcoord->xyz = in->vertex->position;
+	clipcoord->w = 1;
+	*_texcoord = in->vertex->texcoord;
+}
+
+static bool frag(UniformCollection* uniforms, FragmentShaderIn* in, Color32* color) {
+	float off = 1 / 600.f;
+	//blur
+	*color = tex2d(_frag_tex, _texcoord);
+	vec4_scale(color, weight[0], color);
+	Vec2 p = {0, _texcoord->y};
+	Color32 c;
+	for (int i = 1; i < 5; ++i) {
+		p.x = _texcoord->x + off * i;
+		c = tex2d(_frag_tex, &p);
+		vec4_scale(&c, weight[i], &c);
+		vec4_add(color, &c, color);
+		p.x = _texcoord->x - off * i;
+		c = tex2d(_frag_tex, &p);
+		vec4_scale(&c, weight[i], &c);
+		vec4_add(color, &c, color);
+	}
+	return 1;
+}
+
+Program _04_bloom_postprocess = {
+	vert, frag,
+	VARYING_V2_00
+};
diff --git a/src/example/04_bloom/preprocess.c b/src/example/04_bloom/preprocess.c
new file mode 100644
index 0000000..def9fd8
--- /dev/null
+++ b/src/example/04_bloom/preprocess.c
@@ -0,0 +1,31 @@
+#include "../../shaders/common.h"
+
+/*uniforms*/
+
+/*varyings*/
+#define _color reg_v4_00
+
+static void vert(UniformCollection* uniforms, VertexShaderIn* in, Vec4* clipcoord) {
+	static Vec4 p; p.xyz = in->vertex->position; p.w = 1;	 
+	mat4_mulvec4(uniforms->mvp, &p, clipcoord);						
+	color_tocolor32(in->vertex->color, _color);
+}
+
+/*multi target*/
+#define _frag_color    out_color[0]
+#define _bright_color  out_color[1]
+
+static bool frag(UniformCollection* uniforms, FragmentShaderIn* in, Color32* color) {
+	//_frag_color->r = 1;
+	//_frag_color->g = 1;
+	//_frag_color->b = 1;
+	//_frag_color->a = 1;
+	//*_bright_color = *_color;
+	*_frag_color = *_color;
+	return 1;
+}
+
+Program _04_bloom_preprocess = {
+	vert, frag,
+	VARYING_V4_00
+};