X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fambientocclusion.cpp;h=ed7d1636d711d34ee6539fd4ddb11adbb4677f44;hp=0cd3693b8f6ceca22255762294388b437662acc9;hb=HEAD;hpb=f14435e58bfa0fa697a06ba9a454bb30cd37d9d8

diff --git a/source/ambientocclusion.cpp b/source/ambientocclusion.cpp
deleted file mode 100644
index 0cd3693b..00000000
--- a/source/ambientocclusion.cpp
+++ /dev/null
@@ -1,166 +0,0 @@
-#include <cmath>
-#include "ambientocclusion.h"
-#include "blend.h"
-#include "meshbuilder.h"
-#include "tests.h"
-
-namespace {
-
-const char vertex_shader[] =
-	"varying vec2 texcoord;\n"
-	"void main()\n"
-	"{\n"
-	"	gl_Position = gl_Vertex;\n"
-	"	texcoord = gl_Vertex.xy*0.5+0.5;\n"
-	"}\n";
-
-const char occlude_fs[] =
-	"uniform sampler2D depth;\n"
-	"uniform sampler2D rotate;\n"
-	"uniform vec2 screen_size;\n"
-	"uniform vec2 depth_ratio;\n"
-	"uniform float darkness;\n"
-	"varying vec2 texcoord;\n"
-	"void main()\n"
-	"{\n"
-	"	mat2 transform = mat2(texture2D(rotate, texcoord*screen_size/4.0)*2.0-1.0)\n"
- 	"		*mat2(screen_size.y/screen_size.x, 0.0, 0.0, 1.0)*3.0/screen_size.y;\n"
-	"	float sample = depth_ratio.x/(texture2D(depth, texcoord).r-depth_ratio.y);\n"
-	"	float sum = 0.0;\n"
-	"	for(int i=0; i<=3; ++i)\n"
-	"		for(int j=0; j<=3; ++j)\n"
-	"		{\n"
-	"			vec2 offs = transform*vec2(float(i)-1.5, float(j)-1.5);\n"
-	"			float dxy = length(offs)*-sample;\n"
-	"			float dz = depth_ratio.x/(texture2D(depth, texcoord+offs).r-depth_ratio.y)-sample;\n"
-	"			if(abs(dz)<3*dxy)\n"
-	"				sum += atan(dz/dxy)/1.570796;\n"
-	"			else if(dz<0)\n"
-	"				sum -= 0.8;\n"
-	"		}\n"
-	"	gl_FragColor = vec4(min(1.0-sum*darkness/16.0, 1.0), 0.0, 0.0, 1.0);\n"
-	"}\n";
-
-const char combine_fs[] =
-	"uniform sampler2D color;\n"
-	"uniform sampler2D depth;\n"
-	"uniform sampler2D occlusion;\n"
-	"uniform vec2 screen_size;\n"
-	"uniform vec2 depth_ratio;\n"
-	"varying vec2 texcoord;\n"
-	"void main()\n"
-	"{\n"
-	"	float sample = depth_ratio.x/(texture2D(depth, texcoord).r-depth_ratio.y);\n"
-	"	float sum = 1.0;\n"
-	"	float count = 1.0;\n"
-	"	for(int i=0; i<=3; ++i)\n"
-	"		for(int j=0; j<=3; ++j)\n"
-	"		{\n"
-	"			vec2 offs = vec2(float(i)-1.5, float(j)-1.5)/screen_size;\n"
-	"			float dxy = length(offs)*-sample;\n"
-	"			float dz = depth_ratio.x/(texture2D(depth, texcoord+offs).r-depth_ratio.y)-sample;\n"
-	"			if(abs(dz)<3*dxy)\n"
-	"			{\n"
-	"				sum += texture2D(occlusion, texcoord+offs).r;\n"
-	"				count += 1.0;\n"
-	"			}\n"
-	"		}\n"
-	"	gl_FragColor = texture2D(color, texcoord)*sum/count;\n"
-	"}\n";
-
-}
-
-namespace Msp {
-namespace GL {
-
-AmbientOcclusion::AmbientOcclusion(unsigned w, unsigned h, float depth_ratio):
-	occlude_shader(vertex_shader, occlude_fs),
-	occlude_shdata(occlude_shader),
-	combine_shader(vertex_shader, combine_fs),
-	combine_shdata(combine_shader),
-	quad(VERTEX2)
-{
-	occlusion.storage(GL::RGB, w, h);
-	occlusion.set_min_filter(GL::NEAREST);
-	occlusion.set_mag_filter(GL::NEAREST);
-	fbo.attach(COLOR_ATTACHMENT0, occlusion, 0);
-
-	combine_texturing.attach(2, occlusion);
-
-	rotate_lookup.storage(GL::RGBA, 4, 4);
-	rotate_lookup.set_min_filter(GL::NEAREST);
-	rotate_lookup.set_mag_filter(GL::NEAREST);
-	unsigned char data[64];
-	for(unsigned i=0; i<16; ++i)
-	{
-		float a = ((i*541)%16)*M_PI/32;
-		float c = cos(a);
-		float s = sin(a);
-		data[i*3  ] = static_cast<unsigned char>(127+c*127);
-		data[i*3+1] = static_cast<unsigned char>(127+s*127);
-		data[i*3+2] = static_cast<unsigned char>(127-s*127);
-		data[i*3+4] = static_cast<unsigned char>(127+c*127);
-	}
-	rotate_lookup.image(0, GL::RGBA, GL::UNSIGNED_BYTE, data);
-
-	occlude_texturing.attach(1, rotate_lookup);
-
-	occlude_shdata.uniform("depth", 0);
-	occlude_shdata.uniform("rotate", 1);
-	occlude_shdata.uniform("screen_size", w, h);
-
-	combine_shdata.uniform("color", 1);
-	combine_shdata.uniform("depth", 0);
-	combine_shdata.uniform("occlusion", 2);
-	combine_shdata.uniform("screen_size", w, h);
-
-	set_depth_ratio(depth_ratio);
-	set_darkness(1.5);
-
-	MeshBuilder bld(quad);
-	bld.begin(TRIANGLE_STRIP);
-	bld.vertex(-1, 1);
-	bld.vertex(-1, -1);
-	bld.vertex(1, 1);
-	bld.vertex(1, -1);
-	bld.end();
-}
-
-void AmbientOcclusion::set_depth_ratio(float depth_ratio)
-{
-	depth_ratio = 1/depth_ratio;
-
-	occlude_shdata.uniform("depth_ratio", depth_ratio, 1+depth_ratio);
-	combine_shdata.uniform("depth_ratio", depth_ratio, 1+depth_ratio);
-}
-
-void AmbientOcclusion::set_darkness(float darkness)
-{
-	occlude_shdata.uniform("darkness", darkness);
-}
-
-void AmbientOcclusion::render(const Texture2D &color, const Texture2D &depth)
-{
-	occlude_texturing.attach(0, depth);
-	combine_texturing.attach(0, depth);
-	combine_texturing.attach(1, color);
-
-	Bind unbind_dtest(static_cast<DepthTest *>(0), true);
-	Bind unbind_blend(static_cast<Blend *>(0), true);
-
-	{
-		GL::Bind bind_fbo(fbo, true);
-		GL::Bind bind_tex(occlude_texturing);
-		GL::Bind bind_shader(occlude_shader);
-		occlude_shdata.apply();
-		quad.draw();
-	}
-
-	GL::Bind bind_tex(combine_texturing);
-	GL::Bind bind_shader(combine_shader);
-	combine_shdata.apply();
-	quad.draw();
-}
-
-} // namespace GL
-} // namespace Msp