diff options
| author | Mike Pavone <pavone@retrodev.com> | 2013-10-27 21:41:21 -0700 |
|---|---|---|
| committer | Mike Pavone <pavone@retrodev.com> | 2013-10-27 21:41:21 -0700 |
| commit | b5e181c3f87201b95e6b6e6b96de2ac15ed35f35 (patch) | |
| tree | 99346e1d3bd27fe6b9e4ff7249305cb75098ef74 | |
| parent | 7b604db493ad6663b864a5d1b9f509118f9860b2 (diff) | |
Support interlace mode with OpenGL backend
--HG--
branch : opengl
| -rw-r--r-- | default.f.glsl | 6 | ||||
| -rw-r--r-- | render_sdl.c | 10 |
2 files changed, 11 insertions, 5 deletions
diff --git a/default.f.glsl b/default.f.glsl index 55b6c52..f7bb89a 100644 --- a/default.f.glsl +++ b/default.f.glsl @@ -6,5 +6,9 @@ varying vec2 texcoord; void main() { - gl_FragColor = texture2D(textures[0], texcoord); + gl_FragColor = mix( + texture2D(textures[0], texcoord), + texture2D(textures[1], vec2(texcoord.x, texcoord.y - 1.0/512.0)), + sin((texcoord.y * 512.0 - 0.75) * 3.14159265359) / 2.0 + 0.5 + ); } diff --git a/render_sdl.c b/render_sdl.c index f62ba66..ad99025 100644 --- a/render_sdl.c +++ b/render_sdl.c @@ -160,7 +160,7 @@ void render_alloc_surfaces(vdp_context * context) if (i < 2) { glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 512, 256, 0, GL_BGRA, GL_UNSIGNED_BYTE, i ? context->evenbuf : context->oddbuf); } else { - uint32_t blank = 255; + uint32_t blank = 255 << 24; glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 1, 1, 0, GL_BGRA, GL_UNSIGNED_BYTE, &blank); } } @@ -332,8 +332,7 @@ void render_context_gl(vdp_context * context) glUniform1i(un_textures[0], 0); glActiveTexture(GL_TEXTURE1); - //TODO: Select appropriate texture based on status of interlace - glBindTexture(GL_TEXTURE_2D, textures[1]); + glBindTexture(GL_TEXTURE_2D, (context->regs[REG_MODE_4] & BIT_INTERLACE) ? textures[1] : textures[2]); glUniform1i(un_textures[1], 1); glBindBuffer(GL_ARRAY_BUFFER, buffers[0]); @@ -346,7 +345,10 @@ void render_context_gl(vdp_context * context) glDisableVertexAttribArray(at_pos); SDL_GL_SwapBuffers(); - + if (context->regs[REG_MODE_4] & BIT_INTERLACE) + { + context->framebuf = context->framebuf == context->oddbuf ? context->evenbuf : context->oddbuf; + } } uint32_t blankbuf[320*240]; |