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Add scanline shader. Fix up interface a bit for screen width and height.

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This commit is contained in:
Themaister 2010-11-13 13:02:45 +01:00
parent 0ae1456325
commit 9296f76ef8
3 changed files with 52 additions and 3 deletions
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2
config.h
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@ -65,7 +65,7 @@ static const bool vsync = true;
static const bool video_smooth = false;
// Path to custom Cg shader. If using custom shaders, it is recommended to disable video_smooth.
static const char *cg_shader_path = "hqflt/hq2x.cg";
static const char *cg_shader_path = "hqflt/scanline.cg";
// On resize and fullscreen, rendering area will stay 4:3
static const bool force_aspect = true;

7
gl.c
View File

@ -164,6 +164,7 @@ static void GLFWCALL resize(int width, int height)
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
GLuint out_width = width, out_height = height;
if ( keep_aspect )
{
@ -176,12 +177,14 @@ static void GLFWCALL resize(int width, int height)
{
float delta = (desired_aspect / device_aspect - 1.0) / 2.0 + 0.5;
glViewport(width * (0.5 - delta), 0, 2.0 * width * delta, height);
out_width = (int)(2.0 * width * delta);
}
else if ( (int)(device_aspect*1000) < (int)(desired_aspect*1000) )
{
float delta = (device_aspect / desired_aspect - 1.0) / 2.0 + 0.5;
glViewport(0, height * (0.5 - delta), width, 2.0 * height * delta);
out_height = (int)(2.0 * height * delta);
}
else
glViewport(0, 0, width, height);
@ -195,8 +198,8 @@ static void GLFWCALL resize(int width, int height)
#ifdef HAVE_CG
cgGLSetStateMatrixParameter(cg_mvp_matrix, CG_GL_MODELVIEW_PROJECTION_MATRIX, CG_GL_MATRIX_IDENTITY);
#endif
gl_width = width;
gl_height = height;
gl_width = out_width;
gl_height = out_height;
}
static float tv_to_fps(const struct timeval *tv, const struct timeval *new_tv, int frames)

46
hqflt/scanline.cg Normal file
View File

@ -0,0 +1,46 @@
/* Default Vertex shader */
void main_vertex
(
float4 position : POSITION,
float4 color : COLOR,
float2 texCoord : TEXCOORD0,
uniform float4x4 modelViewProj,
out float4 oPosition : POSITION,
out float4 oColor : COLOR,
out float2 otexCoord : TEXCOORD
)
{
oPosition = mul(modelViewProj, position);
oColor = color;
otexCoord = texCoord;
}
struct output
{
float4 color : COLOR;
};
struct input
{
float2 video_size;
float2 texture_size;
float2 output_size;
};
output main_fragment(float2 texCoord : TEXCOORD0, uniform sampler2D decal : TEXUNIT0, uniform input IN)
{
output OUT;
float winHeight = IN.output_size.y;
float4 tex_color = tex2D(decal, texCoord);
OUT.color = (1.0 - 0.60 * floor(fmod(texCoord.y * winHeight, 2.0))) * tex_color;
return OUT;
}