This commit prepares the transition from extension to core geometry shaders.
(Core geometry shaders require GLSL version 1.5 or later.)
This includes using generic vertex attributes instead of built-ins.
Signed-off-by: Fabian Bieler <fabianbie...@fastmail.fm>
---
src/glsl/gsraytrace.cpp | 58 +++++++++++++++++++++++++++----------------------
1 file changed, 32 insertions(+), 26 deletions(-)
diff --git a/src/glsl/gsraytrace.cpp b/src/glsl/gsraytrace.cpp
index ef67643..f9e708f 100644
--- a/src/glsl/gsraytrace.cpp
+++ b/src/glsl/gsraytrace.cpp
@@ -56,6 +56,7 @@ static GLuint pgQuery;
static GLuint dst;
static GLuint eyeRaysAsPoints;
+int posAttribLoc;
int orig_tAttribLoc;
int dir_idxAttribLoc;
int uv_stateAttribLoc;
@@ -69,7 +70,7 @@ float rot[9] = {1,0,0, 0,1,0, 0,0,1};
static const char* vsSource =
" \n"
-"#version 120 \n"
+"#version 150 \n"
"#line " S__LINE__ "\n"
"#define SHADOWS \n"
"#define RECURSION \n"
@@ -83,9 +84,10 @@ static const char* vsSource =
"uniform vec4 backgroundColor; \n"
"uniform int emitNoMore; \n"
" \n"
-"attribute vec4 orig_t; \n"
-"attribute vec4 dir_idx; \n"
-"attribute vec4 uv_state; \n"
+"in vec4 pos; \n"
+"in vec4 orig_t; \n"
+"in vec4 dir_idx; \n"
+"in vec4 uv_state; \n"
"// uv_state.z = state \n"
"// uv_state.w = type (ray generation) \n"
" \n"
@@ -98,9 +100,9 @@ static const char* vsSource =
"// 0: not shadow ray, eye ray \n"
"// 1: shadow ray \n"
" \n"
-"varying vec4 orig_t1; \n"
-"varying vec4 dir_idx1; \n"
-"varying vec4 uv_state1; \n"
+"out vec4 orig_t1; \n"
+"out vec4 dir_idx1; \n"
+"out vec4 uv_state1; \n"
" \n"
" \n"
"//----------------------------------------------------------------\n"
@@ -224,7 +226,7 @@ static const char* vsSource =
" if (state == 0)
\n"
" {
\n"
" // generate eye rays\n"
-" ray = Ray(cameraPos, normalize(vec3(gl_Vertex.x, gl_Vertex.y, -1.0) *
rot3));\n"
+" ray = Ray(cameraPos, normalize(vec3(pos.x, pos.y, -1.0) * rot3)); \n"
" isec.t = INF;\n"
" isec.idx = -1;\n"
" state = 1;\n"
@@ -240,7 +242,7 @@ static const char* vsSource =
" //else state == 3 \n"
" \n"
" //outVS(); \n"
-" gl_Position = gl_Vertex; \n"
+" gl_Position = pos; \n"
" orig_t1.xyz = ray.orig; \n"
" orig_t1.w = isec.t; \n"
" dir_idx1.xyz = ray.dir; \n"
@@ -251,7 +253,7 @@ static const char* vsSource =
static const char* gsSource =
-"#version 120 \n"
+"#version 150 \n"
"#line " S__LINE__ "\n"
"#extension GL_ARB_geometry_shader4: require \n"
" \n"
@@ -310,13 +312,13 @@ static const char* gsSource =
" return isec; \n"
"} \n"
" \n"
-"varying in vec4 orig_t1[1]; \n"
-"varying in vec4 dir_idx1[1]; \n"
-"varying in vec4 uv_state1[1]; \n"
+"in vec4 orig_t1[1]; \n"
+"in vec4 dir_idx1[1]; \n"
+"in vec4 uv_state1[1]; \n"
" \n"
-"varying out vec4 orig_t2; \n"
-"varying out vec4 dir_idx2; \n"
-"varying out vec4 uv_state2; \n"
+"out vec4 orig_t2; \n"
+"out vec4 dir_idx2; \n"
+"out vec4 uv_state2; \n"
" \n"
" \n"
"void \n"
@@ -390,7 +392,7 @@ static const char* gsSource =
"}\n";
static const char* fsSource =
-"#version 120 \n"
+"#version 150 \n"
"#line " S__LINE__ "\n"
" \n"
"#define SHADOWS \n"
@@ -448,9 +450,9 @@ static const char* fsSource =
" return isec;\n"
"}\n"
"\n"
-"varying vec4 orig_t2;\n"
-"varying vec4 dir_idx2;\n"
-"varying vec4 uv_state2;\n"
+"in vec4 orig_t2;\n"
+"in vec4 dir_idx2;\n"
+"in vec4 uv_state2;\n"
"\n"
"vec3\n"
"idx2color(const in int idx)\n"
@@ -596,9 +598,11 @@ Draw(void)
glUniformMatrix3fv(glGetUniformLocation(program, "rot3"), 1, 0, rot);
+ //gs.gs->getVertexAttribLocation("pos", gs.posAttribLoc);
//gs.gs->getVertexAttribLocation("orig_t", gs.orig_tAttribLoc);
//gs.gs->getVertexAttribLocation("dir_idx", gs.dir_idxAttribLoc);
//gs.gs->getVertexAttribLocation("uv_state", gs.uv_stateAttribLoc);
+ posAttribLoc = glGetAttribLocation(program, "pos");
orig_tAttribLoc = glGetAttribLocation(program, "orig_t");
dir_idxAttribLoc = glGetAttribLocation(program, "dir_idx");
uv_stateAttribLoc = glGetAttribLocation(program, "uv_state");
@@ -612,8 +616,9 @@ Draw(void)
//gs.eyeRaysAsPoints->bindAs(ARRAY);
glBindBuffer(GL_ARRAY_BUFFER, eyeRaysAsPoints);
{
- glEnableClientState(GL_VERTEX_ARRAY);
- glVertexPointer(4, GL_FLOAT, sizeof(GSRay), 0);
+ glEnableVertexAttribArray(posAttribLoc);
+ glVertexAttribPointer(posAttribLoc, 4, GL_FLOAT, GL_FALSE,
+ sizeof(GSRay), (void*)offsetof(GSRay, pos));
glEnableVertexAttribArray(orig_tAttribLoc);
glVertexAttribPointer(orig_tAttribLoc, 4, GL_FLOAT, GL_FALSE,
@@ -641,7 +646,7 @@ Draw(void)
glDisableVertexAttribArray(orig_tAttribLoc);
- glDisableClientState(GL_VERTEX_ARRAY);
+ glDisableVertexAttribArray(posAttribLoc);
}
//gs.eyeRaysAsPoints->unbindAs(ARRAY);
glBindBuffer(GL_ARRAY_BUFFER, 0);
@@ -670,8 +675,9 @@ Draw(void)
//gs.dst->bindAs(ARRAY);
glBindBuffer(GL_ARRAY_BUFFER, dst);
{
- glEnableClientState(GL_VERTEX_ARRAY);
- glVertexPointer(4, GL_FLOAT, sizeof(GSRay), 0);
+ glEnableVertexAttribArray(posAttribLoc);
+ glVertexAttribPointer(posAttribLoc, 4, GL_FLOAT, GL_FALSE,
+ sizeof(GSRay), (void*)offsetof(GSRay, pos));
glEnableVertexAttribArray(orig_tAttribLoc);
glVertexAttribPointer(orig_tAttribLoc, 4, GL_FLOAT, GL_FALSE,
@@ -701,7 +707,7 @@ Draw(void)
glDisableVertexAttribArray(orig_tAttribLoc);
- glDisableClientState(GL_VERTEX_ARRAY);
+ glDisableVertexAttribArray(posAttribLoc);
}
//gs.dst->unbindAs(ARRAY);
glBindBuffer(GL_ARRAY_BUFFER, 0);
--
1.8.3.2
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