X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=demo_prior;a=blobdiff_plain;f=src%2Fpost.c;h=994c93e12c16f674861cf3070e731e2596896a66;hp=c1a2a2304df540cc2aa47e0c99a1f3b01bafac34;hb=HEAD;hpb=3a9f6854df479d81442273c9d0b133c49c5c8f66

diff --git a/src/post.c b/src/post.c
index c1a2a23..994c93e 100644
--- a/src/post.c
+++ b/src/post.c
@@ -2,6 +2,93 @@
 #include "texture.h"
 #include "post.h"
 #include "demo.h"
+#include "opt.h"
+#include "sdr.h"
+
+static unsigned int post_fbtex_gltexid[2];
+static unsigned int rbuf_depth[2];
+
+unsigned int post_fbo[2];
+struct texture post_fbtex[2];
+int post_fbtex_cur;
+
+unsigned int sdr_vgn;
+int vgn_uloc_color, vgn_uloc_offs, vgn_uloc_sharp;
+
+int post_init(void)
+{
+	int i;
+
+	if(!(sdr_vgn = create_program_load("sdr/post.v.glsl", "sdr/vignette.p.glsl"))) {
+		return -1;
+	}
+	glUseProgram(sdr_vgn);
+	vgn_uloc_color = get_uniform_loc(sdr_vgn, "color");
+	vgn_uloc_offs = get_uniform_loc(sdr_vgn, "offset");
+	vgn_uloc_sharp = get_uniform_loc(sdr_vgn, "sharpness");
+
+
+	glGenTextures(2, post_fbtex_gltexid);
+	glGenRenderbuffers(2, rbuf_depth);
+
+	for(i=0; i<2; i++) {
+		post_fbtex[i].id = post_fbtex_gltexid[i];
+		post_fbtex[i].width = 0;
+		post_fbtex[i].height = 0;
+		post_fbtex[i].pixels = 0;
+
+		glBindTexture(GL_TEXTURE_2D, post_fbtex[i].id);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+	}
+	return 0;
+}
+
+void post_cleanup(void)
+{
+	if(post_fbtex_gltexid[0]) {
+		glDeleteTextures(2, post_fbtex_gltexid);
+	}
+	if(rbuf_depth[0]) {
+		glDeleteRenderbuffers(2, rbuf_depth);
+	}
+	if(post_fbo[0]) {
+		glDeleteFramebuffers(2, post_fbo);
+	}
+
+	if(sdr_vgn) {
+		free_program(sdr_vgn);
+	}
+}
+
+void post_reshape(int x, int y)
+{
+	int i, ifmt;
+
+	if(x != post_fbtex[0].width || y != post_fbtex[0].height) {
+		ifmt = opt.srgb ? GL_SRGB_ALPHA : GL_RGBA;
+
+		for(i=0; i<2; i++) {
+			glBindTexture(GL_TEXTURE_2D, post_fbtex[i].id);
+			glTexImage2D(GL_TEXTURE_2D, 0, ifmt, x, y, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
+			post_fbtex[i].width = x;
+			post_fbtex[i].height = y;
+
+			glBindRenderbuffer(GL_RENDERBUFFER, rbuf_depth[i]);
+			glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, x, y);
+		}
+
+		if(!post_fbo[0]) {
+			glGenFramebuffers(2, post_fbo);
+			for(i=0; i<2; i++) {
+				glBindFramebuffer(GL_FRAMEBUFFER, post_fbo[i]);
+				glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, post_fbtex_gltexid[i], 0);
+				glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rbuf_depth[i]);
+			}
+			glBindFramebuffer(GL_FRAMEBUFFER, 0);
+		}
+	}
+}
 
 void overlay(unsigned int tex, float aspect, float alpha)
 {
@@ -20,19 +107,23 @@ void overlay(unsigned int tex, float aspect, float alpha)
 	glDisable(GL_LIGHTING);
 	glEnable(GL_BLEND);
 	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-	glEnable(GL_TEXTURE_2D);
 
-	glBindTexture(GL_TEXTURE_2D, tex);
+	if(tex) {
+		glEnable(GL_TEXTURE_2D);
+		glBindTexture(GL_TEXTURE_2D, tex);
+	} else {
+		glDisable(GL_TEXTURE_2D);
+	}
 
 	glBegin(GL_QUADS);
 	glColor4f(1, 1, 1, alpha);
-	glTexCoord2f(0, 1);
+	glTexCoord2f(0, 0);
 	glVertex2f(-1, -1);
-	glTexCoord2f(1, 1);
-	glVertex2f(1, -1);
 	glTexCoord2f(1, 0);
+	glVertex2f(1, -1);
+	glTexCoord2f(1, 1);
 	glVertex2f(1, 1);
-	glTexCoord2f(0, 0);
+	glTexCoord2f(0, 1);
 	glVertex2f(-1, 1);
 	glEnd();
 
@@ -45,5 +136,29 @@ void overlay(unsigned int tex, float aspect, float alpha)
 
 void overlay_tex(struct texture *tex, float alpha)
 {
-	overlay(tex->id, (float)tex->width / tex->height, alpha);
+	unsigned int tid;
+	float aspect;
+	if(tex) {
+		tid = tex->id;
+		aspect = (float)tex->width / tex->height;
+	} else {
+		tid = 0;
+		aspect = 1.0f;
+	}
+	overlay(tid, aspect, alpha);
+}
+
+void vignette(float r, float g, float b, float offs, float sharp)
+{
+	glUseProgram(sdr_vgn);
+	if(vgn_uloc_color >= 0) {
+		glUniform3f(vgn_uloc_color, r, g, b);
+	}
+	if(vgn_uloc_offs >= 0) {
+		glUniform1f(vgn_uloc_offs, offs);
+	}
+	if(vgn_uloc_sharp >= 0) {
+		glUniform1f(vgn_uloc_sharp, sharp);
+	}
+	overlay(0, 1.0, 1.0);
 }