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flycast/core/rend/gl4/gles.cpp

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#include <cmath>
#include "gl4.h"
#include "rend/gles/glcache.h"
#include "wsi/gl_context.h"
#include "rend/TexCache.h"
#include "cfg/cfg.h"
#include "oslib/oslib.h"
#include "rend/rend.h"
#include "rend/gui.h"
#include "rend/transform_matrix.h"
//Fragment and vertex shaders code
static const char* VertexShaderSource = R"(#version 140
#define pp_Gouraud %d
#if pp_Gouraud == 0
#define INTERPOLATION flat
#else
#define INTERPOLATION smooth
#endif
/* Vertex constants*/
uniform highp vec4 scale;
uniform highp mat4 normal_matrix;
/* Vertex input */
in highp vec4 in_pos;
in lowp vec4 in_base;
in lowp vec4 in_offs;
in mediump vec2 in_uv;
in lowp vec4 in_base1;
in lowp vec4 in_offs1;
in mediump vec2 in_uv1;
/* output */
INTERPOLATION out lowp vec4 vtx_base;
INTERPOLATION out lowp vec4 vtx_offs;
out mediump vec2 vtx_uv;
INTERPOLATION out lowp vec4 vtx_base1;
INTERPOLATION out lowp vec4 vtx_offs1;
out mediump vec2 vtx_uv1;
void main()
{
vtx_base = in_base;
vtx_offs = in_offs;
vtx_uv = in_uv;
vtx_base1 = in_base1;
vtx_offs1 = in_offs1;
vtx_uv1 = in_uv1;
vec4 vpos = in_pos;
if (vpos.z < 0.0 || vpos.z > 3.4e37)
{
gl_Position = vec4(0.0, 0.0, 1.0, 1.0 / vpos.z);
return;
}
vpos = normal_matrix * vpos;
vpos.w = 1.0 / vpos.z;
vpos.z = vpos.w;
vpos.xy *= vpos.w;
gl_Position = vpos;
}
)";
const char* gl4PixelPipelineShader = SHADER_HEADER
R"(
#define cp_AlphaTest %d
#define pp_ClipTestMode %d
#define pp_UseAlpha %d
#define pp_Texture %d
#define pp_IgnoreTexA %d
#define pp_ShadInstr %d
#define pp_Offset %d
#define pp_FogCtrl %d
#define pp_TwoVolumes %d
#define pp_DepthFunc %d
#define pp_Gouraud %d
#define pp_BumpMap %d
#define FogClamping %d
#define PASS %d
#define PI 3.1415926
#if PASS <= 1
out vec4 FragColor;
#endif
#if pp_TwoVolumes == 1
#define IF(x) if (x)
#else
#define IF(x)
#endif
#if pp_Gouraud == 0
#define INTERPOLATION flat
#else
#define INTERPOLATION smooth
#endif
/* Shader program params*/
uniform lowp float cp_AlphaTestValue;
uniform lowp vec4 pp_ClipTest;
uniform lowp vec3 sp_FOG_COL_RAM,sp_FOG_COL_VERT;
uniform highp float sp_FOG_DENSITY;
uniform highp float shade_scale_factor;
uniform sampler2D tex0, tex1;
layout(binding = 5) uniform sampler2D fog_table;
uniform int pp_Number;
uniform usampler2D shadow_stencil;
uniform sampler2D DepthTex;
uniform lowp float trilinear_alpha;
uniform lowp vec4 fog_clamp_min;
uniform lowp vec4 fog_clamp_max;
uniform ivec2 blend_mode[2];
#if pp_TwoVolumes == 1
uniform bool use_alpha[2];
uniform bool ignore_tex_alpha[2];
uniform int shading_instr[2];
uniform int fog_control[2];
#endif
/* Vertex input*/
INTERPOLATION in lowp vec4 vtx_base;
INTERPOLATION in lowp vec4 vtx_offs;
in mediump vec2 vtx_uv;
INTERPOLATION in lowp vec4 vtx_base1;
INTERPOLATION in lowp vec4 vtx_offs1;
in mediump vec2 vtx_uv1;
lowp float fog_mode2(highp float w)
{
highp float z = clamp(w * sp_FOG_DENSITY, 1.0, 255.9999);
highp float exp = floor(log2(z));
highp float m = z * 16.0 / pow(2.0, exp) - 16.0;
float idx = floor(m) + exp * 16.0 + 0.5;
vec4 fog_coef = texture(fog_table, vec2(idx / 128.0, 0.75 - (m - floor(m)) / 2.0));
return fog_coef.r;
}
highp vec4 fog_clamp(highp vec4 col)
{
#if FogClamping == 1
return clamp(col, fog_clamp_min, fog_clamp_max);
#else
return col;
#endif
}
void main()
{
setFragDepth();
#if PASS == 3
// Manual depth testing
highp float frontDepth = texture(DepthTex, gl_FragCoord.xy / textureSize(DepthTex, 0)).r;
#if pp_DepthFunc == 0 // Never
discard;
#elif pp_DepthFunc == 1 // Less
if (gl_FragDepth >= frontDepth)
discard;
#elif pp_DepthFunc == 2 // Equal
if (gl_FragDepth != frontDepth)
discard;
#elif pp_DepthFunc == 3 // Less or equal
if (gl_FragDepth > frontDepth)
discard;
#elif pp_DepthFunc == 4 // Greater
if (gl_FragDepth <= frontDepth)
discard;
#elif pp_DepthFunc == 5 // Not equal
if (gl_FragDepth == frontDepth)
discard;
#elif pp_DepthFunc == 6 // Greater or equal
if (gl_FragDepth < frontDepth)
discard;
#endif
#endif
// Clip outside the box
#if pp_ClipTestMode==1
if (gl_FragCoord.x < pp_ClipTest.x || gl_FragCoord.x > pp_ClipTest.z
|| gl_FragCoord.y < pp_ClipTest.y || gl_FragCoord.y > pp_ClipTest.w)
discard;
#endif
// Clip inside the box
#if pp_ClipTestMode==-1
if (gl_FragCoord.x >= pp_ClipTest.x && gl_FragCoord.x <= pp_ClipTest.z
&& gl_FragCoord.y >= pp_ClipTest.y && gl_FragCoord.y <= pp_ClipTest.w)
discard;
#endif
highp vec4 color = vtx_base;
lowp vec4 offset = vtx_offs;
mediump vec2 uv = vtx_uv;
bool area1 = false;
ivec2 cur_blend_mode = blend_mode[0];
#if pp_TwoVolumes == 1
bool cur_use_alpha = use_alpha[0];
bool cur_ignore_tex_alpha = ignore_tex_alpha[0];
int cur_shading_instr = shading_instr[0];
int cur_fog_control = fog_control[0];
#if PASS == 1
uvec4 stencil = texture(shadow_stencil, gl_FragCoord.xy / textureSize(shadow_stencil, 0));
if (stencil.r == 0x81u) {
color = vtx_base1;
offset = vtx_offs1;
uv = vtx_uv1;
area1 = true;
cur_blend_mode = blend_mode[1];
cur_use_alpha = use_alpha[1];
cur_ignore_tex_alpha = ignore_tex_alpha[1];
cur_shading_instr = shading_instr[1];
cur_fog_control = fog_control[1];
}
#endif
#endif
#if pp_UseAlpha==0 || pp_TwoVolumes == 1
IF(!cur_use_alpha)
color.a=1.0;
#endif
#if pp_FogCtrl==3 || pp_TwoVolumes == 1 // LUT Mode 2
IF(cur_fog_control == 3)
color=vec4(sp_FOG_COL_RAM.rgb,fog_mode2(gl_FragCoord.w));
#endif
#if pp_Texture==1
{
highp vec4 texcol;
if (area1)
texcol = texture(tex1, uv);
else
texcol = texture(tex0, uv);
#if pp_BumpMap == 1
highp float s = PI / 2.0 * (texcol.a * 15.0 * 16.0 + texcol.r * 15.0) / 255.0;
highp float r = 2.0 * PI * (texcol.g * 15.0 * 16.0 + texcol.b * 15.0) / 255.0;
texcol.a = clamp(vtx_offs.a + vtx_offs.r * sin(s) + vtx_offs.g * cos(s) * cos(r - 2.0 * PI * vtx_offs.b), 0.0, 1.0);
texcol.rgb = vec3(1.0, 1.0, 1.0);
#else
#if pp_IgnoreTexA==1 || pp_TwoVolumes == 1
IF(cur_ignore_tex_alpha)
texcol.a=1.0;
#endif
#if cp_AlphaTest == 1
if (cp_AlphaTestValue>texcol.a) discard;
#endif
#endif
#if pp_ShadInstr==0 || pp_TwoVolumes == 1 // DECAL
IF(cur_shading_instr == 0)
{
color=texcol;
}
#endif
#if pp_ShadInstr==1 || pp_TwoVolumes == 1 // MODULATE
IF(cur_shading_instr == 1)
{
color.rgb*=texcol.rgb;
color.a=texcol.a;
}
#endif
#if pp_ShadInstr==2 || pp_TwoVolumes == 1 // DECAL ALPHA
IF(cur_shading_instr == 2)
{
color.rgb=mix(color.rgb,texcol.rgb,texcol.a);
}
#endif
#if pp_ShadInstr==3 || pp_TwoVolumes == 1 // MODULATE ALPHA
IF(cur_shading_instr == 3)
{
color*=texcol;
}
#endif
#if pp_Offset==1 && pp_BumpMap == 0
{
color.rgb += offset.rgb;
}
#endif
}
#endif
#if PASS == 1 && pp_TwoVolumes == 0
uvec4 stencil = texture(shadow_stencil, gl_FragCoord.xy / textureSize(shadow_stencil, 0));
if (stencil.r == 0x81u)
color.rgb *= shade_scale_factor;
#endif
color = fog_clamp(color);
#if pp_FogCtrl==0 || pp_TwoVolumes == 1 // LUT
IF(cur_fog_control == 0)
{
color.rgb=mix(color.rgb,sp_FOG_COL_RAM.rgb,fog_mode2(gl_FragCoord.w));
}
#endif
#if pp_Offset==1 && pp_BumpMap == 0 && (pp_FogCtrl == 1 || pp_TwoVolumes == 1) // Per vertex
IF(cur_fog_control == 1)
{
color.rgb=mix(color.rgb, sp_FOG_COL_VERT.rgb, offset.a);
}
#endif
color *= trilinear_alpha;
#if cp_AlphaTest == 1
color.a=1.0;
#endif
//color.rgb=vec3(gl_FragCoord.w * sp_FOG_DENSITY / 128.0);
#if PASS == 1
FragColor = color;
#elif PASS > 1
// Discard as many pixels as possible
switch (cur_blend_mode.y) // DST
{
case ONE:
switch (cur_blend_mode.x) // SRC
{
case ZERO:
discard;
case ONE:
case OTHER_COLOR:
case INVERSE_OTHER_COLOR:
if (color == vec4(0.0))
discard;
break;
case SRC_ALPHA:
if (color.a == 0.0 || color.rgb == vec3(0.0))
discard;
break;
case INVERSE_SRC_ALPHA:
if (color.a == 1.0 || color.rgb == vec3(0.0))
discard;
break;
}
break;
case OTHER_COLOR:
if (cur_blend_mode.x == ZERO && color == vec4(1.0))
discard;
break;
case INVERSE_OTHER_COLOR:
if (cur_blend_mode.x <= SRC_ALPHA && color == vec4(0.0))
discard;
break;
case SRC_ALPHA:
if ((cur_blend_mode.x == ZERO || cur_blend_mode.x == INVERSE_SRC_ALPHA) && color.a == 1.0)
discard;
break;
case INVERSE_SRC_ALPHA:
switch (cur_blend_mode.x) // SRC
{
case ZERO:
case SRC_ALPHA:
if (color.a == 0.0)
discard;
break;
case ONE:
case OTHER_COLOR:
case INVERSE_OTHER_COLOR:
if (color == vec4(0.0))
discard;
break;
}
break;
}
ivec2 coords = ivec2(gl_FragCoord.xy);
uint idx = getNextPixelIndex();
Pixel pixel;
pixel.color = color;
pixel.depth = gl_FragDepth;
pixel.seq_num = uint(pp_Number);
pixel.next = imageAtomicExchange(abufferPointerImg, coords, idx);
pixels[idx] = pixel;
discard;
#endif
}
)";
static const char* ModifierVolumeShader = SHADER_HEADER
R"(
void main()
{
setFragDepth();
}
)";
gl4_ctx gl4;
struct gl4ShaderUniforms_t gl4ShaderUniforms;
int max_image_width;
int max_image_height;
bool gl4CompilePipelineShader( gl4PipelineShader* s, const char *pixel_source /* = PixelPipelineShader */, const char *vertex_source /* = NULL */)
{
char vshader[16384];
sprintf(vshader, vertex_source == NULL ? VertexShaderSource : vertex_source, s->pp_Gouraud);
char pshader[16384];
sprintf(pshader, pixel_source,
s->cp_AlphaTest,s->pp_ClipTestMode,s->pp_UseAlpha,
s->pp_Texture,s->pp_IgnoreTexA,s->pp_ShadInstr,s->pp_Offset,s->pp_FogCtrl, s->pp_TwoVolumes, s->pp_DepthFunc, s->pp_Gouraud, s->pp_BumpMap, s->fog_clamping, s->pass);
s->program = gl_CompileAndLink(vshader, pshader);
//setup texture 0 as the input for the shader
GLint gu = glGetUniformLocation(s->program, "tex0");
if (s->pp_Texture == 1 && gu != -1)
glUniform1i(gu, 0);
// Setup texture 1 as the input for area 1 in two volume mode
gu = glGetUniformLocation(s->program, "tex1");
if (s->pp_Texture == 1 && gu != -1)
glUniform1i(gu, 1);
//get the uniform locations
s->pp_ClipTest = glGetUniformLocation(s->program, "pp_ClipTest");
s->sp_FOG_DENSITY = glGetUniformLocation(s->program, "sp_FOG_DENSITY");
s->cp_AlphaTestValue= glGetUniformLocation(s->program, "cp_AlphaTestValue");
//FOG_COL_RAM,FOG_COL_VERT,FOG_DENSITY;
if (s->pp_FogCtrl==1 && s->pp_Texture==1)
s->sp_FOG_COL_VERT=glGetUniformLocation(s->program, "sp_FOG_COL_VERT");
else
s->sp_FOG_COL_VERT=-1;
if (s->pp_FogCtrl==0 || s->pp_FogCtrl==3)
{
s->sp_FOG_COL_RAM=glGetUniformLocation(s->program, "sp_FOG_COL_RAM");
}
else
{
s->sp_FOG_COL_RAM=-1;
}
s->shade_scale_factor = glGetUniformLocation(s->program, "shade_scale_factor");
// Use texture 1 for depth texture
gu = glGetUniformLocation(s->program, "DepthTex");
if (gu != -1)
glUniform1i(gu, 2); // GL_TEXTURE2
s->trilinear_alpha = glGetUniformLocation(s->program, "trilinear_alpha");
if (s->fog_clamping)
{
s->fog_clamp_min = glGetUniformLocation(s->program, "fog_clamp_min");
s->fog_clamp_max = glGetUniformLocation(s->program, "fog_clamp_max");
}
else
{
s->fog_clamp_min = -1;
s->fog_clamp_max = -1;
}
s->normal_matrix = glGetUniformLocation(s->program, "normal_matrix");
// Shadow stencil for OP/PT rendering pass
gu = glGetUniformLocation(s->program, "shadow_stencil");
if (gu != -1)
glUniform1i(gu, 3); // GL_TEXTURE3
s->pp_Number = glGetUniformLocation(s->program, "pp_Number");
s->pp_DepthFunc = glGetUniformLocation(s->program, "pp_DepthFunc");
s->blend_mode = glGetUniformLocation(s->program, "blend_mode");
s->use_alpha = glGetUniformLocation(s->program, "use_alpha");
s->ignore_tex_alpha = glGetUniformLocation(s->program, "ignore_tex_alpha");
s->shading_instr = glGetUniformLocation(s->program, "shading_instr");
s->fog_control = glGetUniformLocation(s->program, "fog_control");
return glIsProgram(s->program)==GL_TRUE;
}
void gl4_delete_shaders()
{
for (auto it : gl4.shaders)
{
if (it.second.program != 0)
glcache.DeleteProgram(it.second.program);
}
gl4.shaders.clear();
glcache.DeleteProgram(gl4.modvol_shader.program);
gl4.modvol_shader.program = 0;
}
static void gles_term(void)
{
glDeleteBuffers(1, &gl4.vbo.geometry);
gl4.vbo.geometry = 0;
glDeleteBuffers(1, &gl4.vbo.modvols);
glDeleteBuffers(1, &gl4.vbo.idxs);
glDeleteBuffers(1, &gl4.vbo.idxs2);
glDeleteBuffers(1, &gl4.vbo.tr_poly_params);
gl4_delete_shaders();
glDeleteVertexArrays(1, &gl4.vbo.main_vao);
glDeleteVertexArrays(1, &gl4.vbo.modvol_vao);
}
static void create_modvol_shader()
{
if (gl4.modvol_shader.program != 0)
return;
char vshader[16384];
sprintf(vshader, VertexShaderSource, 1);
gl4.modvol_shader.program=gl_CompileAndLink(vshader, ModifierVolumeShader);
gl4.modvol_shader.normal_matrix = glGetUniformLocation(gl4.modvol_shader.program, "normal_matrix");
}
static bool gl_create_resources()
{
if (gl4.vbo.geometry != 0)
// Assume the resources have already been created
return true;
findGLVersion();
//create vao
glGenVertexArrays(1, &gl4.vbo.main_vao);
glGenVertexArrays(1, &gl4.vbo.modvol_vao);
//create vbos
glGenBuffers(1, &gl4.vbo.geometry);
glGenBuffers(1, &gl4.vbo.modvols);
glGenBuffers(1, &gl4.vbo.idxs);
glGenBuffers(1, &gl4.vbo.idxs2);
gl4SetupMainVBO();
gl4SetupModvolVBO();
create_modvol_shader();
gl_load_osd_resources();
// Create the buffer for Translucent poly params
glGenBuffers(1, &gl4.vbo.tr_poly_params);
// Bind it
glBindBuffer(GL_SHADER_STORAGE_BUFFER, gl4.vbo.tr_poly_params);
// Declare storage
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, gl4.vbo.tr_poly_params);
glCheck();
return true;
}
//setup
extern void initABuffer();
void reshapeABuffer(int width, int height);
extern void gl4CreateTextures(int width, int height);
static bool gles_init()
{
int major = 0;
int minor = 0;
glGetIntegerv(GL_MAJOR_VERSION, &major);
glGetIntegerv(GL_MINOR_VERSION, &minor);
if (major < 4 || (major == 4 && minor < 3))
{
WARN_LOG(RENDERER, "Warning: OpenGL version doesn't support per-pixel sorting.");
return false;
}
INFO_LOG(RENDERER, "Per-pixel sorting enabled");
glcache.DisableCache();
if (!gl_create_resources())
return false;
// glEnable(GL_DEBUG_OUTPUT);
// glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
// glDebugMessageCallback(gl_DebugOutput, NULL);
// glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, NULL, GL_TRUE);
//clean up the buffer
glcache.ClearColor(0.f, 0.f, 0.f, 0.f);
glClear(GL_COLOR_BUFFER_BIT);
theGLContext.Swap();
initABuffer();
if (settings.rend.TextureUpscale > 1)
{
// Trick to preload the tables used by xBRZ
u32 src[] { 0x11111111, 0x22222222, 0x33333333, 0x44444444 };
u32 dst[16];
UpscalexBRZ(2, src, dst, 2, 2, false);
}
fog_needs_update = true;
return true;
}
static void resize(int w, int h)
{
if (w > max_image_width || h > max_image_height || stencilTexId == 0)
{
if (w > max_image_width)
max_image_width = w;
if (h > max_image_height)
max_image_height = h;
if (stencilTexId != 0)
{
glcache.DeleteTextures(1, &stencilTexId);
stencilTexId = 0;
}
if (depthTexId != 0)
{
glcache.DeleteTextures(1, &depthTexId);
depthTexId = 0;
}
if (opaqueTexId != 0)
{
glcache.DeleteTextures(1, &opaqueTexId);
opaqueTexId = 0;
}
if (depthSaveTexId != 0)
{
glcache.DeleteTextures(1, &depthSaveTexId);
depthSaveTexId = 0;
}
gl4CreateTextures(max_image_width, max_image_height);
reshapeABuffer(max_image_width, max_image_height);
}
}
static bool RenderFrame()
{
DoCleanup();
create_modvol_shader();
const bool is_rtt = pvrrc.isRTT;
TransformMatrix<true> matrices(pvrrc);
gl4ShaderUniforms.normal_mat = matrices.GetNormalMatrix();
const glm::mat4& scissor_mat = matrices.GetScissorMatrix();
ViewportMatrix = matrices.GetViewportMatrix();
if (!is_rtt)
gcflip = 0;
else
gcflip = 1;
/*
Handle Dc to screen scaling
*/
const float screen_scaling = settings.rend.ScreenScaling / 100.f;
int rendering_width;
int rendering_height;
if (is_rtt)
{
int scaling = settings.rend.RenderToTextureBuffer ? 1 : settings.rend.RenderToTextureUpscale;
rendering_width = matrices.GetDreamcastViewport().x * scaling;
rendering_height = matrices.GetDreamcastViewport().y * scaling;
}
else
{
rendering_width = screen_width * screen_scaling + 0.5f;
rendering_height = screen_height * screen_scaling + 0.5f;
}
resize(rendering_width, rendering_height);
//DEBUG_LOG(RENDERER, "scale: %f, %f, %f, %f", gl4ShaderUniforms.scale_coefs[0], gl4ShaderUniforms.scale_coefs[1], gl4ShaderUniforms.scale_coefs[2], gl4ShaderUniforms.scale_coefs[3]);
//VERT and RAM fog color constants
u8* fog_colvert_bgra=(u8*)&FOG_COL_VERT;
u8* fog_colram_bgra=(u8*)&FOG_COL_RAM;
gl4ShaderUniforms.ps_FOG_COL_VERT[0]=fog_colvert_bgra[2]/255.0f;
gl4ShaderUniforms.ps_FOG_COL_VERT[1]=fog_colvert_bgra[1]/255.0f;
gl4ShaderUniforms.ps_FOG_COL_VERT[2]=fog_colvert_bgra[0]/255.0f;
gl4ShaderUniforms.ps_FOG_COL_RAM[0]=fog_colram_bgra [2]/255.0f;
gl4ShaderUniforms.ps_FOG_COL_RAM[1]=fog_colram_bgra [1]/255.0f;
gl4ShaderUniforms.ps_FOG_COL_RAM[2]=fog_colram_bgra [0]/255.0f;
//Fog density constant
u8* fog_density=(u8*)&FOG_DENSITY;
float fog_den_mant=fog_density[1]/128.0f; //bit 7 -> x. bit, so [6:0] -> fraction -> /128
s32 fog_den_exp=(s8)fog_density[0];
gl4ShaderUniforms.fog_den_float = fog_den_mant * powf(2.0f,fog_den_exp) * settings.rend.ExtraDepthScale;
gl4ShaderUniforms.fog_clamp_min[0] = ((pvrrc.fog_clamp_min >> 16) & 0xFF) / 255.0f;
gl4ShaderUniforms.fog_clamp_min[1] = ((pvrrc.fog_clamp_min >> 8) & 0xFF) / 255.0f;
gl4ShaderUniforms.fog_clamp_min[2] = ((pvrrc.fog_clamp_min >> 0) & 0xFF) / 255.0f;
gl4ShaderUniforms.fog_clamp_min[3] = ((pvrrc.fog_clamp_min >> 24) & 0xFF) / 255.0f;
gl4ShaderUniforms.fog_clamp_max[0] = ((pvrrc.fog_clamp_max >> 16) & 0xFF) / 255.0f;
gl4ShaderUniforms.fog_clamp_max[1] = ((pvrrc.fog_clamp_max >> 8) & 0xFF) / 255.0f;
gl4ShaderUniforms.fog_clamp_max[2] = ((pvrrc.fog_clamp_max >> 0) & 0xFF) / 255.0f;
gl4ShaderUniforms.fog_clamp_max[3] = ((pvrrc.fog_clamp_max >> 24) & 0xFF) / 255.0f;
if (fog_needs_update && settings.rend.Fog)
{
fog_needs_update = false;
UpdateFogTexture((u8 *)FOG_TABLE, GL_TEXTURE5, GL_RED);
}
glcache.UseProgram(gl4.modvol_shader.program);
glUniformMatrix4fv(gl4.modvol_shader.normal_matrix, 1, GL_FALSE, &gl4ShaderUniforms.normal_mat[0][0]);
gl4ShaderUniforms.PT_ALPHA=(PT_ALPHA_REF&0xFF)/255.0f;
GLuint output_fbo;
//setup render target first
if (is_rtt)
{
GLuint channels,format;
switch(FB_W_CTRL.fb_packmode)
{
case 0: //0x0 0555 KRGB 16 bit (default) Bit 15 is the value of fb_kval[7].
channels=GL_RGBA;
format=GL_UNSIGNED_BYTE;
break;
case 1: //0x1 565 RGB 16 bit
channels=GL_RGB;
format=GL_UNSIGNED_SHORT_5_6_5;
break;
case 2: //0x2 4444 ARGB 16 bit
channels=GL_RGBA;
format=GL_UNSIGNED_BYTE;
break;
case 3://0x3 1555 ARGB 16 bit The alpha value is determined by comparison with the value of fb_alpha_threshold.
channels=GL_RGBA;
format=GL_UNSIGNED_BYTE;
break;
case 4: //0x4 888 RGB 24 bit packed
case 5: //0x5 0888 KRGB 32 bit K is the value of fk_kval.
case 6: //0x6 8888 ARGB 32 bit
WARN_LOG(RENDERER, "Unsupported render to texture format: %d", FB_W_CTRL.fb_packmode);
return false;
case 7: //7 invalid
die("7 is not valid");
break;
}
DEBUG_LOG(RENDERER, "RTT packmode=%d stride=%d - %d,%d -> %d,%d", FB_W_CTRL.fb_packmode, FB_W_LINESTRIDE.stride * 8,
FB_X_CLIP.min, FB_Y_CLIP.min, FB_X_CLIP.max, FB_Y_CLIP.max);
output_fbo = gl4BindRTT(FB_W_SOF1 & VRAM_MASK, (u32)lroundf(matrices.GetDreamcastViewport().x),
(u32)lroundf(matrices.GetDreamcastViewport().y), channels, format);
}
else
{
if (settings.rend.ScreenScaling != 100 || !theGLContext.IsSwapBufferPreserved())
{
output_fbo = init_output_framebuffer(rendering_width, rendering_height);
}
else
{
glBindFramebuffer(GL_FRAMEBUFFER,0);
glViewport(0, 0, screen_width, screen_height);
output_fbo = 0;
}
}
glcache.Disable(GL_SCISSOR_TEST);
if (!pvrrc.isRenderFramebuffer)
{
//Main VBO
glBindBuffer(GL_ARRAY_BUFFER, gl4.vbo.geometry); glCheck();
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, gl4.vbo.idxs); glCheck();
//move vertex to gpu
glBufferData(GL_ARRAY_BUFFER,pvrrc.verts.bytes(),pvrrc.verts.head(),GL_STREAM_DRAW); glCheck();
glBufferData(GL_ELEMENT_ARRAY_BUFFER,pvrrc.idx.bytes(),pvrrc.idx.head(),GL_STREAM_DRAW);
//Modvol VBO
if (pvrrc.modtrig.used())
{
glBindBuffer(GL_ARRAY_BUFFER, gl4.vbo.modvols); glCheck();
glBufferData(GL_ARRAY_BUFFER,pvrrc.modtrig.bytes(),pvrrc.modtrig.head(),GL_STREAM_DRAW); glCheck();
}
// TR PolyParam data
glBindBuffer(GL_SHADER_STORAGE_BUFFER, gl4.vbo.tr_poly_params);
glBufferData(GL_SHADER_STORAGE_BUFFER, sizeof(struct PolyParam) * pvrrc.global_param_tr.used(), pvrrc.global_param_tr.head(), GL_STATIC_DRAW);
glCheck();
if (is_rtt || !settings.rend.WideScreen || matrices.IsClipped())
{
float width;
float height;
float min_x;
float min_y;
if (!is_rtt)
{
glm::vec4 clip_min(pvrrc.fb_X_CLIP.min, pvrrc.fb_Y_CLIP.min, 0, 1);
glm::vec4 clip_dim(pvrrc.fb_X_CLIP.max - pvrrc.fb_X_CLIP.min + 1,
pvrrc.fb_Y_CLIP.max - pvrrc.fb_Y_CLIP.min + 1, 0, 0);
clip_min = scissor_mat * clip_min;
clip_dim = scissor_mat * clip_dim;
min_x = clip_min[0];
min_y = clip_min[1];
width = clip_dim[0];
height = clip_dim[1];
if (width < 0)
{
min_x += width;
width = -width;
}
if (height < 0)
{
min_y += height;
height = -height;
}
if (matrices.GetSidebarWidth() > 0)
{
float scaled_offs_x = matrices.GetSidebarWidth() * screen_scaling;
glcache.ClearColor(0.f, 0.f, 0.f, 0.f);
glcache.Enable(GL_SCISSOR_TEST);
glScissor(0, 0, (GLsizei)lroundf(scaled_offs_x), rendering_height);
glClear(GL_COLOR_BUFFER_BIT);
glScissor((GLint)lroundf(screen_width * screen_scaling - scaled_offs_x), 0, (GLsizei)lroundf(scaled_offs_x) + 1, rendering_height);
glClear(GL_COLOR_BUFFER_BIT);
}
}
else
{
width = pvrrc.fb_X_CLIP.max - pvrrc.fb_X_CLIP.min + 1;
height = pvrrc.fb_Y_CLIP.max - pvrrc.fb_Y_CLIP.min + 1;
min_x = pvrrc.fb_X_CLIP.min;
min_y = pvrrc.fb_Y_CLIP.min;
if (settings.rend.RenderToTextureUpscale > 1 && !settings.rend.RenderToTextureBuffer)
{
min_x *= settings.rend.RenderToTextureUpscale;
min_y *= settings.rend.RenderToTextureUpscale;
width *= settings.rend.RenderToTextureUpscale;
height *= settings.rend.RenderToTextureUpscale;
}
}
glScissor((GLint)lroundf(min_x), (GLint)lroundf(min_y), (GLsizei)lroundf(width), (GLsizei)lroundf(height));
glcache.Enable(GL_SCISSOR_TEST);
}
gl4DrawStrips(output_fbo, rendering_width, rendering_height);
}
else
{
glBindFramebuffer(GL_FRAMEBUFFER, output_fbo);
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glcache.ClearColor(0.f, 0.f, 0.f, 0.f);
glClear(GL_COLOR_BUFFER_BIT);
gl4DrawFramebuffer(640.f, 480.f);
}
eglCheck();
if (is_rtt)
ReadRTTBuffer();
else if (settings.rend.ScreenScaling != 100 || !theGLContext.IsSwapBufferPreserved())
gl4_render_output_framebuffer();
return !is_rtt;
}
void termABuffer();
struct gl4rend : Renderer
{
bool Init() override { return gles_init(); }
void Resize(int w, int h) override
{
screen_width=w;
screen_height=h;
resize((int)lroundf(w * settings.rend.ScreenScaling / 100.f), (int)lroundf(h * settings.rend.ScreenScaling / 100.f));
}
void Term() override
{
termABuffer();
if (stencilTexId != 0)
{
glcache.DeleteTextures(1, &stencilTexId);
stencilTexId = 0;
}
if (depthTexId != 0)
{
glcache.DeleteTextures(1, &depthTexId);
depthTexId = 0;
}
if (opaqueTexId != 0)
{
glcache.DeleteTextures(1, &opaqueTexId);
opaqueTexId = 0;
}
if (depthSaveTexId != 0)
{
glcache.DeleteTextures(1, &depthSaveTexId);
depthSaveTexId = 0;
}
TexCache.Clear();
gl_free_osd_resources();
free_output_framebuffer();
gles_term();
}
bool Process(TA_context* ctx) override { return ProcessFrame(ctx); }
bool Render() override
{
RenderFrame();
if (!pvrrc.isRTT)
DrawOSD(false);
return !pvrrc.isRTT;
}
bool RenderLastFrame() override { return !theGLContext.IsSwapBufferPreserved() ? gl4_render_output_framebuffer() : false; }
void Present() override { theGLContext.Swap(); }
void DrawOSD(bool clear_screen) override
{
OSD_DRAW(clear_screen);
}
virtual u64 GetTexture(TSP tsp, TCW tcw) override
{
return gl_GetTexture(tsp, tcw);
}
};
Renderer* rend_GL4() { return new gl4rend(); }
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